Wednesday, 11 November 2015

HEAD & NECK CANCERS WITH EYE CANCER

HEAD & NECK CANCERS WITH EYE CANCER:



(1) Overview
(a) Oral cavity and oropharyngeal cancer
(b) Hypopharynx cancer
(c) Larynx cancer
(d) Nasopharynx cancer
(e) Salivary glands cancer
(f) Nasal cavity and Paranasal sinus cancer

Section I – Head & neck cancers:


(1) Overview
(2) Symptoms
(3) Risk factors
(4) Diagnosis as per modern science
(5) Staging

(a) Oral Cavity cancer


(1) Overview


The oral cavity includes the lips, the inside lining and the cheeks (buccal mucosa), the teeth, the gums, the front two thirds of the tongue, the floor of the mouth below the tongue, the bony roof of the mouth (hard palate), and the area behind the wisdom teeth (retromolar trigone).
Oropharyngeal cancer developes in the part of the throat just behind the mouth, called the oropharynx. The oropharynx begins where the oral cavity ends. It also includes the base of the tongue (the back third of the tongue), the soft palate, the tonsils and the tonsillar pillars, and the back wall of the throat (the posterior pharyngeal wall).
The oral cavity and oropharynx are useful in breathing, talking, eating, chewing and swalling. Minor salivary glands located throughout the oral cavity and oropharynx make saliva that keeps the mouth moist and helps digest food.
The oral cavity and oropharynx contain several types of tissue and each of these tissues contain several types of cells. Different cancers can develop from each kind of cell.
More than 90% of cancers of the oral cavity and oropharynx are squamous cell carcinomas, also called squamous cell cancers. Squamous cells are flat scale like cells that normally form the lining of the oral cavity and oropharynx. Squamous cell cancer begins as a collection of abnormal squamous cells. The earliest form of squamous cell cancer is called carcinoma in situ, meaning that the cancer cells are present only in the lining layer of cells called the epithelium. Invasive squamous cell cancer means that the cancer cells have spread beyond this layer into deeper layers of the oral cavity or oropharynx.

(2) Symptoms 


(i) A sore in the mouth that does not heal.
(ii) Persistent pain.
(iii) Persistent lump or thickening in the cheek.
(iv) Persistent white or red patch on the gums, tongue, tonsil, or lining of the mouth.
(v) Difficulty chewing or swallowing.
(vi) Difficulty moving the jaw or tongue.
(vii) Numbness of the tongue or in other areas of the mouth.
(viii) Swelling of the jaw.
(ix) Loosening of the teeth without any apparent reason, voice change.
(x) Lump or mass in the neck, weight loss, bad breath. 

(3) Risk factors 


(a) Tobacco – Almost 90% of people with oral cavity and orophayngeal cancer use tobacco, and the risk of developing these cancers increases with the amount used.
(b) Alcohol – Drinking alcohol strongly increases a smoker’s risk of developing oral cavity and oropharyngeal cancer. It is found predominantly in alcohol users.
(c) Ultraviolet light – Majority of patients with lip cancer have outdoor occupation associated with prolonged exposure to sunlight.
(d) Irritation – Long time irritation to the lining of the mouth is a risk factor for oral cancer. The major source for this in India being tobacco.
(e) Human Papilomavirus – Papilomavirus are a suspected source of oral cancers, like in cervix, vagina, vulva and penis.
(f) Immune system suppression – People undergoing immunosuppressive drugs to treat certain immune system diseases, or to prevent rejection of transplanted organs, are at an increased risk of oral cancer. 

(4) Diagnosis as per modern science: - 


(I) Complete medical history.
(II) Complete Head & Neck examination including nasopharyngoscopy, Pharyngoscopy, and laryngoscopy.
(III) Ex-foliative cytology.
(IV) Incisional biopsy.
(V) Fine needle biopsy.
(VI) Imaging tests including chest X-ray, CT scan, MRI. 

(5) Staging:- 


(i) Stage 0 – The cancer is in situ. It has not yet penetrated to a deeper layer of oral or orophayngeal tissue and has not spread to lymph-nodes or distant sites.
(ii) Stage 1 – The tumor is 2cms or smaller and has not spread to lymph nodes or distant sites.
(iii) Stage 2 – The tumor is larger than 2 cms., but smaller tha 4 cms., and has not spread to lymph nodes or distant sites.
(iv) Stage 3 – The tumor is larger than stage 2 and has spread to one lymph node.
(v) Stage 4 – The tumor can be larger than 6 cms and has spread to lymph nodes and to distant sites.

(b) Hypopharynx Cancer: - 


(1) Overview: -
                     Hypopharynx is the end part of the throat or the pharynx. This is a 5 inch long hollow tube extending from behind the nose and going down to become part of the oesophagus. Air and food pass through pharynx from the way on to the trachea or the oesophagus respectively.
In the cancer that originates from the hypopharynx, the cancer cells are mostly squamous cells, which are flat and scaly cells. A small portion of cancer could also be lymphomas, i.e., non-hodgekin’s lymphoma.
Hypopharyngeal cancer usually spreads through the lymphatic system. And the cancerous cells are carried along by the lymphs, which are colourless fluid containing cells that help fight infections and disease.

(2) Symptoms: - 


(I) A sore in the throat that will nor soothe.
(II) Difficulty and pain while chewing and swallowing.
(III) A change in the voice or pain in the ear.

(3) Risk factors: - 


(i) Tobacco use
(ii) Tobacco chewing as is common in many south asean countries.
(iii) Chronic usage of alcohol.

(4) Diagnosis as per modern science: -

(i) Direct laryngoscopy.
(ii) Biopsy
(iii) Barium swallow to detect spread in the oesophagus and digestive organs.

(5) Staging: -


(a) Stage 1 – The disease is only in one part of the hypopharynx and has not spread to the lymph nodes in the area.
(b) Stage 2 – It has spread to more than one part of the hypopharynx or has spread to tissues adjacent to the hypopharynx but has not grown into the larynx. Has not spread to the lymph nodes.
(c) Stage 3 – The disease has spread to nearby organs and the lymphatic system.
(d) Stage 4 – The cancer has spread to the distant organs of the body. 

(c) Laryngeal cancer: -


(1) Overview: -


The larynx is a two inch long organ in the neck. The larynx in used by humans to talk, breathe or swallow. It is made of cartridge. The main cartiledge which forms the front of the larynx is also called as adam’s apple.

Just behind the trachea and the larynx in the neck lies the food pipe or the oesophagus, which carries the food from the mouth to the stomach. The opening of the oesophagus and the larynx are adjascent to each other in the throat.

When we swallow food, a small flap called the epiglottis moves down to cover the larynx in order to prevent the food from going down the wrong passage and into the lungs.

The other important anatomical areas of the larynx are,

(i) The glottis, which is where the vocal cords are.
(ii) The supraglottis, which is the area above the vocal cords.
(iii) The subglottis, which is the area which connects the larynx to the trachea.
Cancer of the larynx, can develop in any other region of the larynx, the glottis, the supraglottis, or the subglottis. The cancer can also go outside the larynx into lymph nodes or lymph glands in the neck.
Through lymphnodes laryngeal cancer can spread to other parts of the throat and neck, the lungs, and to the back of the tongue, and other distant parts of the body such as the bones and the brain. 

(2) Symptoms: -


(i) Majority of cancers originate from the vocal cords. These are painless tumors, which almost always cause a change in the voice or hoarsness.
(ii) The tumors which are located in the supraglottis cause a feeling of a lump or a sore throat or earache.
(iii) Tumors below the vocal cords are very rare, but they make it hard to breathe and produce noisy difficult breathing.
(iv) A cough which refuses to goaway, or the feeling of a lump in the throat are early warning signs of cancer of the larynx.
(v) As the tumors keep progressing, it causes weight loss, pain, bad breath, and frequent choking upon food.
(vi) In some cases tumor can grow so big that it may become impossible for the patient to swallow. 

(3) Risk factors: -


(i) Gender & age – It is most often seen in people aged above 55 years and it is seen more commonly in men than in women.
(ii) Smoking and chewing tobacco is a very potent risk for developing laryngeal cancer.
(iii) Alcohol – Alcohol combined with tobacco is a high risk factor for causing laryngeal cancer.
(iv) Asbestos – Asbestos workers also run a great risk of getting cancer of the larynx. 

(4) Diagnosis as per modern science: -


(i) Indirect laryngoscopy – Which comprises of a small, long handled mirror being used to check the larynx and the vocal cords indirectly to look for abnormal areas. The test is painless.
(ii) Direct laryngoscopy – It is a more specific investigation in which a self-lit or indirectly lit metallic tube is inserted into the patient’s nose or mouth. This tube is also called a laryngoscope. As the tube descends down the throat, the doctor can look at areas that cannot be seen with the simple mirror used in indirect laryngoscopy.
(iii) Biopsy – If the doctor doctor notices any abnormalities he perfoms biopsy, which is the removal of a small piece of representative tissue. This tissue piece is then examined to find the presence of cancer cells.
Usually cancer cells of larynx are squamous cell carcinomas. Squamous cells are cells lining the epiglottis, the vocal cords, and other parts of the larynx and they are flat, scale like cells. 

(5) Staging: -


Stage I – There is no of spread to lymph nodes the tumor is smaller than 2cms.
Stage II – The tunmor involves more than 1 subsites of the larynx, or is 2 to 3 cms. in size.
Stage III – The cancer has spread to lymph nodes but size not larger than 3 cms., on the same side of the neck as primary tumor.
Stage IVa – There is spread to 1 lymph node, size is about 3 to 6 cms., on the same side of the neck as primary tumor.
 Stage  IVb – There is spread to lymph nodes on both sides of the neck, the tumor may be larger than 6 cms.
Stage  IVc – There is spread to lymph nodes and the tumor is larger than 6 cms, with evidence of distant metastasis. 

(d) Nasopharynx cancer: -

(1) Overview: -


The nasopharynx is the area in the back of the nose towards the base of the skull. The nasopharynx is a box like organ about 1.5 inches in size. It lies just above the soft palate, behind the entrance into the nasal passages. It tends to spread very rapidly. The nasopharynx contains several types of cells. Different cancers can develop in each type of cell.

Three types of cancerous tumors are recognized in the nsopharynx.
(a) Keratinizing squamous cell carcinoma.
(b) Non—keratinizing squamous cell carcinoma.
(c) Undifferentiated carcinoma.

Lymphomas can also be found in the nasopharynx. They are cancers of immune system cells called lymphocytes. 

(2) Symptoms: -


Some patients with nasopharynx cancer have no symptoms at all. Most of the patients have a lump or tumor mass in the neck area when the cancer is diagnosed. Other symptoms may present as follows.
(i) Loss of hearing.
(ii) Nasal blockage or stuffiness.
(iii) Painful nose-bleeds.
(iv) Difficulty opening the mouth.
(v) Blurred or double vision. 

(3) Risk factors: -


(i) Diet – Nasopharynx cancer is commonly seen in people having high salt content fish and meat diet.
(ii) Virus infections – Infection with EBV virus can cause mononucleosis, leading to cancer of the nasopharynx.
(iii) Tobacco and alcohol – People habituated to chewing tobacco, or smoking with alcohol intake are at a very high risk of developing nasopharynx cancer.
(iv) Genetic factors – It is found that people with certain tissue types are at a higher risk of developing nasopharynx cancer. 

(4) Diagnosis as per modern science: -


(a) X-Ray
(b) C-T Scan
(c) MRI
(d) Blood Tests
(e) Fine needle Biopsy 

(5) Staging & Grading: -


Stage 0 – Cancer is in-situ, has not penetrated to deeper levels of tissues, and has not spread to lymph nodes or distant sites.

Stage I – Tumor is only in the nasopharynx and has not spread to lymph nodes or other organs.

Stage II – The tumor has spread to soft tissues of the nasal cavity and the oropharynx and has not spread to lymph nodes or distant sites.

Stage III – The tumor has spread to soft tissues of the nasal cavity and the oropharynx and to lymph nodes, not larger than 6 cm, on both sides of the neck but not to distant sites.

Stage IV – The tumor is larger than 6 cm, has spread to lymph nodes and distant sites. 

(e) Salivary Glands tumor: -


(1) Overview: -


These are glands that produce saliva, saliva  is a fluid which keeps the mouth moist. It also moistens and softens food during the act of chewing and has a minimal digestive action on food components as well.
The salivary glands are chiefly arranged in three groups
(i) The parotid glands are the largest, placed just in front of the ear.
(ii) The submandibular glads are placed just beneath the jaws, protruding partially into the top of the neck.
(iii) The sublingual glands are arranged on both sides of the floor of the mouth.
(iv) There are several monor salivary glands as well, scattered randomly in the mouth and other parts of the upper gastrointestinal tract.
Most of the salivary gland tumors are non-cancerous, however few tumors can be cancerous. Cancers arising from salivay glands are of several types. 

(2) Symptoms: -


(i) A mass or lump in the face, neck, or mouth
(ii) Pain in one place in the face, neck, or mouth
(iii) A newly noticed difference between the size and/or shape of the left and right sides of the face or neck
(iv) Numbness in part of the face, noticeable  weakness of the muscles on one side of the face. 

(3) Risk factors: -


(i) Radiation exposure – Industrial exposure to certain radioactive elements increases risk levels of salivary glands tumor.
(ii) Diet – Diets rich in animal fats, but low in fruits and vegetables may leads to salivary glads tumors.
(iii) Tobacco & Alcohol – Chewing and smoking of tobacco combined with alcohol greatly increases the risk of salivary glands tumors.
(iv) Hereditary factor – Certain inherited genetic factors are responsible for causing salivary gland tumors. 

(4) Diagnosis as per modern science: -


(i) X – Ray
(ii) C-T Scan
(iii) MRI
(iv) Biopsy
(v) Fine needle aspiration 

(5) Staging: -


Stage I – The cancer is not more than 4 cm in diameter and has not spread into the surrounding tissue or to the lymph nodes in the region.

Stage II – The cancer is more than 4 cm and has spread into the surrouding tissues including the skin, soft tissues, bone or nerve near the glands, but there is no spread to the neighbouring lymph nodes.

Stage III – There is spread to nearby lymph node.

Stage IV – The cancer is any size and has spread to more than one lymph nodes on the same side of the neck, or on both sides. Has spread to distant organs. 

(f) Nasal cavity & Paranasal sinus cancer: - 


(1) overview: -


 The nose opens into the nasal passageway, or cavity. This cavity runs along the top of the palate, and turns downward to join the passage from the mouth to the throat.Paranasal sinus means in the vicinity of the sinus area. They are cavities of small tunnels. The nasal cavity and paranasal sinuses help filter, warm, and humidify the air we breathe. They also provide resonanace to the voice, lighten the skull, and provide a bony frame work for the face and eyes.The nasal cavity ans paranasal sinuses are lined by a layer of mucos producing tissue called mucosa. The mucosa has multiple types of cells including.Squamous epithelial cells, which are lining cells and form the majority of the mucosa.Glandular cells, such as minor salivary glands etc. which produce mucus and other fluids.Nerve cells which are responsible for sensation and the sense of smell in the nose.Infection fighting cells which are part of the immune system, blood vessel cells, and other supporting cells All of these cells that make up the mucos can become cancerpus.Squamous cell carcinoma is the most common type.Adenocarcinoma – Cancer of the glandular cells.Malignant lymphomas – Cancer arising out of lymph or immune system cells.Malignant melanoma – Cancer of pigment or skin color containing cells.Papilomas – Wart like growths that are not cancer, but have a potential to become cancerous.Esthesioneuroblastomas – These are derived from the olfactory nerves, the cells that govern the sense of smell. 

(2) Symptoms: -


- Persistent or progressive nasal congestion and stuffiness.
- Pain above or below the eyes.
- One sided nasal obstruction
- Nasal bleeds and nasal drainage in the back of the nose and throat.
- Pus drainage from the nose
- Decresed sense of smell and numbness or pain inparts of the face.
- Groeth or tumor in the face
- Bulging of the eyes or loss of vision. 

(3) Risk factors: -


(a) Occupational hazards – Occupational exposure to dust of wood, textiles, and leather inhaled, and also flour.
Other material may include glues, formaldehyde, solvents used in furniture and shoe production, nickel and chromium dust, radium.
(b) Smoking – Smoking is a risk factor for nasal cavity cancer, as well as for cancers of other organs.
(c) Family history – Genetic inheritance is a factor for causing nasal and paranasal sinus cancers. 

(4) Diagnosis as per modern science: -


X-Ray
Computed tomography
Magnetic resonance imaging
Biopsy. 

(5) Staging: -


Stage I – The cancer is limited to sinus mucosa and has not spread.

Stage II – The cancer has affected or destroyed some of the bones of the maxillary sinuses, but has not spread beyond that.

Stage III – The cancer has grown through the back of the sinus. The cancer has reached the tissues of the cheek, the eye socket, or the ethmoid sinus in front of the maxillary sinus. The cancer may not have spread to the lymphatic system or to distant organs.

Stage IV – In this stage the cancer has spread to one or more lymph nodes, is larger than 3 cms, spread to distant organs.

Eye cancer (Retinoblastoma):

(1) Overview: -


The ratina is a lining of nervous tissues located at the back of the two eyes. It is a photosensitive layer, that is, it is responsible for sensing light and forming images.
Cancer of the ratin is called retinoblastoma. It can occur at any age. It can apprear in any one of the eye, or both the eyes. Usually, the tumor is confined to the eye socket without spreading to the adjascent tissues.
Retinoblastoma has a tendency to be hereditary. This type of cancer often is seen in children. 

(2) Symptoms: -


Usually the tumor id quite evident, with the patient having a white or discolured bulging tumor in one or both eyes, which may have no vision at all. 

(3) Risk factors: -


(1) Age – Eye cancer predominantly found in children and is rarely seen inadults.
(2) Genetic factors – About half the cases of retinoblastoma are hereditary. The other half may occur due to other reasons. Hereditary retinoblastoma tends to affect both the eyes whereas the sporadic ones usually ocuurs only in one eye. 

(4) Diagnosis as per modern science: -


As per modern science diagnosis may involve CT Scan, MRI, Sonography of the abdomen, Bone scan, Biopsy etc. 

(5) Staging: -


(a) Intraoccular retinoblastoma – Cancer is restricted to one or both eyes and has not spred to adjascent or distant tissues.
(b) Extraoccular retinoblastoma – Cancer has spread beyond the eyes, either in adjascent tissues or to distant organs.
(c) Recurrant retinoblastoma – This is a disease which has recurred after the initial therapy is completed. It may have occurred in the eye or in any other part of the body.

Sunday, 7 June 2015

Pancreas Cancer

Pancreas Cancer:




(1) Overview
(2) Risk factors
(3) Signs & Symptoms
(4) Diagnosis as per modern science
(5) Staging

(1) Overview: -

Pancreas is a secreting gland placed right behind the stomach. It is about 6 inches long but less than 2 inches wide, and extends horizontally across the abdomen.
The pancreas contains two separate glands, the exocrine and endocrine glands. Exocrine glands releases substances into the ducts, the endocrine gland releases substances into the blood-stream. More than 95% of the cells in the pancreas are exocrine glands and ducts. The exocrine glands produce pancreatic juices, which contains enzymes that help digest fats, proteins, and carbohydrates in the food. The exocrine ducts carry this pancreatic juice to the common bile duct and eventually to the small intestine.A small percentage of the cells in the pancreas are endocrine cells. These cells are arranged in small clusters called islets. The islets release 2 hormones, insulin and glucogen. Insulin is important in reducing the amount of sugar in the blood while glucogen increases it.

(2) Risk factors: -  

Age: - Almost 70% of patients with pancreas cancer are above 65 years of age.

Gender: - Men are more likely to develop cancer of the pancreas as compared to women.

Tobacco and Alcohol: - The risk of developing pancreas cancer increases with the intake combination of tobacco and alcohol.

Diet: - Diet with high fat content may increase the risk of developing pancreas cancer. Fruits and vegetables have an effect of reducing the risk.

Diabetes Mellitus: - Pancreatic cancer is more common in people with this disease.

Chronic Pancreatitis: - This is a long term inflammation of the pancreas. This condition is associated with an increased risk of Pancreatitis cancer.

Occupational exposure: - Heavy exposure to certain pesticides, dyes and chemicals related to gasoline may increase the risk of developing cancer of the pancreas.

Family history: - An inherited tendency to develop this cancer may be a factor in a large no. of cases.

Stomach problems: - Infection of the stomach with the ulcer causing bacteria H-Pylori increases the risk of pancreatic cancer. 

(3) Signs and symptoms: -
  
·                     Jaundice
·                     Pain
·                     Weight loss
·                     Digestive problems
·                     Gallbladder enlargement
·                     Diabetes mellitus
·                     Blood clots or fatty tissue abnormalities 

(4) Diagnosis as per modern science 

(i) CT scan
(ii) Positron emission tomography
(iii) Ultrasonography
(iv) Magnetic resonance Imaging
(v) Endoscopy
(vi) Several Blood Tests
(vii) Biopsy 

(5) Staging: -  

Stage I: - The tumor is confined to the pancreas and is less than 2cms in size. It has not spread to nearby lymph nodes or distant sites.

Stage II: - The tumor is either confined to the pancreas or growing outside the pancreas but not into large blood vessels. It has spread to nearby lymph nodes but not to distant sites.

Stage III: - The tumor is growing outside the pancreas into large blood vessels. It may or may not have spread to lymph nodes. It has not spread to other organs.

Stage IV: - The cancer has spread to distant sites. 


Friday, 5 June 2015

Prostate Cancer

Prostate Cancer:




(1) Overview
(2) Risk factors
(3) Signs & Symptoms
(4) Diagnosis as per Ayurveda
(5) Staging 

(1) Overview: -

The prostate is a gland in the male reproductive system. Located just below the bladder (the organ that collects and empties urine), and in front of the rectum. It is about the size of a walnut and surrounds part of the urethra (the tube that empties urine from the bladder. The prostate gland produces fluid that makes up part of the semen.
Prostate cancer is found mainly in elder men. As men age, the prostate may get bigger and block the urethra or bladder. This may cause difficulty in urination or can interfere with sexual function. The condition is called benign prostatatic hyperplasia, although it is not cancer, surgery may be required to remove it. The symptoms of benign prostatic hyperplasia or of other problems in the prostate may be similar to symptoms for prostate cancer.
Although several cell types are found in the prostate, almost 99% of prostate cancers develop from the glandular cells. Glandular cells make the seminal fluid that is secreted by the prostate. The medical term for a cancer that starts in glandular cells is Adenocarcinoma. Because other types of prostate cancer are so rare.
Most prostate cancers grow slowly. Some prostate cancers, however can grow and spread quickly. 

(2) Risk factors: - 

(a) Age: - The chances of having prostate cancer increases after age 50. Majority of prostate cancers are diagnosed in men above 65 years of age.
(b) Race: - Prostate cancer is found more widely in African-American men. Prostate cancer occurs less frequently in Asian men as compared to European or white men.
(c) Family history: - Hereditary factors play a role in the development of prostate cancer.
(d) Diet: - Men having high fat diets are more likely to develop prostate cancer.
  
(3) Signs and Symptoms: -  

(i) Weak or interrupted flow of urine.
(ii) Frequent urination.
(iii) Difficulty urinating.
(iv) Pain or burning during urination.
(v) Blood in the urine or semen.
(vi) Nagging pain in the back, hips or pelvis.
(vii) Painful ejaculation. 

(4) Diagnosis as per modern science: -

(a) Digital rectal exam.
(b) Prostate specific antigen tests.
(c) Trans rectal ultrasound.
(d) Biopsy.
(e) CT Scan.
(f) MRI. 

(5) Staging: - 

(i) Stage I: - The cancer is still confined to the prostate and has not spread to lymph nodes or elsewhere in the body.

(ii) Stage II: - The cancer is still within the prostate and not spread to the lymph nodes or elsewhere in the body. It can be felt on digital rectal exam or seen on transrectal ultrasound.

(iii) Stage III: - The cancer has begun to spread outside the prostate and may have spread to the seminal vesicles, but it has not spread to the lymph nodes.

(iv) Stage IV: - It has spread to other, more distant sites in the body.

Wednesday, 3 June 2015

Urinary Bladder Cancer

Urinary Bladder Cancer:




(1) Overview
(2)  Risk factors
(3) Signs and Symptoms
(4) Diagnosis as per modern science
(5) Staging 

(1) Overview: - 

The bladder is a hollow organ in the lower part of the abdomen; it is shaped like a small balloon and has a muscular wall that stores urine until it is passed out of the body. Urine is the liquid waste that is made by the kidneys when they clean the blood. The urine passes from the two kidneys into the bladder through two tubes called ureters. When the bladder is emptied during urination, the urine goes from the bladder to the outside of the body through another tube called the urethra.


Types of Bladder cancers

(1) Transitional cell carcinoma or urothelial carcinoma.
        Sub-types of urothelial carcinoma.

        (i) Non-Invasive urothelial tumors: - These tumors are limited to the bladder only.
       (ii) Invasive urothelial tumors: - The cancer may have spread from the urothelium to the deeper layers of the bladder.
       (iii) Papillary urothelial tumors.

(2) Squamous cell carcinoma: - Cancer that begins in squamous cells, which are thin, flat cells that may form in the bladder after long-term infection or irritation.

(3) Adenocarcinoma: - Cancer that begins in the glandular cells. Glandular cells in the lining of the bladder produce and release fluids such as mucus.

(4) Cancer that is confined to the lining of the bladder is called superficial bladder cancer. Cancer that begins in the transitional cells may spread through the lining of the bladder and invade the muscle wall of the bladder or spread to nearby organs and lymph nodes this is called invasive bladder cancer. 

(2) Risk factors: -

(a) Smoking
(b) Occupational exposure: - Exposure to certain chemicals at work, such as rubber, certain dyes used in textiles, paint and certain chemicals in hairdressing and perfume industry.
(c) A diet in fried meats and fat.
(d) Age factor.
(e) Being male.
(f) Race.
(g) Bladder infection and inflammation for long duration.

(3) Signs and Symptoms: -  

(i) Blood in the urine.
(ii) Frequent urination, or feeling the need to urinate without being able to do so.
(iii) Pain during urination.
(iv) Lower back pain. 

(4) Diagnosis as per modern science: -

(a) CT scan
(b) Urine analysis
(c) Internal examination of vagina and rectum.
(d) Intravenous pyelogram.
(e) Cytoscopy.
(f) Biopsy.
(g) Urine cytology. 

(5) Staging: -

(i) Stage 0: - The cancer is non-invasive papillary carcinoma. It has not grown into the muscles or connective tissues of the bladder wall or spread to lymph nodes or distant sites.

(ii) Stage I: - The cancer has grown to the connective tissues under the layer of the bladder wall. The cancer has not spread to lymph nodes or to distant sites.

(iii) Stage II: - The cancer has spread to the thick muscle layer of the bladder wall, but, it has not passed completely through the muscles to reach the layer of fatty tissues that surrounds the bladder. The cancer has not spread to lymph nodes or to distant sites.

(iv) Stage III: - The cancer has grown completely through the bladder into the layers of fatty tissues that surrounds the bladder. It may have spread into prostate, uterus, or vagina. The cancer has not spread to lymph nodes or to distant sites.

(v) Stage IV: - The cancer has spread through the bladder wall to the pelvic or abdominal wall and/or has spread to lymph nodes and/or distant sites, such as bones, liver or lungs.