What is a premalignant lesion?
Basically, a precancerous lesion is a collection of cells from the body’s organs that may look and appear to be the same as cancer cells, but may not have the properties of cancer cells that allow them to break through the membranes of the organ they come from and spread (or “metastasize”) to other organs.
What is the difference between premalignant and precancerous?
The WHO has defined a precancerous lesion as “a morphologically altered tissue in which cancer is more likely to occur than in its apparently normal counterpart,” whereas a premalignant condition is defined as “a generalized state associated with a significantly increased risk of cancer” [1].
What is the most common pathology for prostate cancer?
The most common type of pathology for prostate cancer is adenocarcinoma that 93.75% of cases are included. Secondary TCC with secondary source is present in 5% and sarcoma in 1.25% of cases. 46.25% of patients with prostate cancer are smokers.
What is premalignant carcinoma?
A term used to describe a condition that may (or is likely to) become cancer. Also called precancerous.
What lesion is most commonly considered premalignant?
Both actinic keratoses and intraepithelial carcinomas can therefore be considered premalignant — that is, some lesions, may undergo transformation into squamous cell carcinomas (but most do not).
WHO classification premalignant lesions and conditions?
Under the widely used World Health Organization (WHO) classification for the pathological diagnosis of oral premalignant lesions, dysplasia, which is graded as mild, moderate or severe, and carcinoma in situ (CIS), which is a non-invasive carcinoma, are classified as precursor lesions of oral squamous cell carcinoma.
What is the most common precancerous lesion?
The most common oral precancerous lesions are oral leukoplakia, oral submucous fibrosis (OSMF), and oral erythroplakia.
What are the five types of prostate cancer?
Types of prostate cancer
- Adenocarcinoma of the prostate. Adenocarcinomas develop in the gland cells that line the prostate gland and the tubes of the prostate gland.
- Transitional cell carcinoma of the prostate.
- Squamous cell carcinoma of the prostate.
- Small cell prostate cancer.
- Other rarer types of prostate cancers.
What are the 4 stages of prostate cancer?
For prostate cancer there are 4 stages. Often the stages 1 to 4 are written as the Roman numerals I, II, III and IV. Generally, the higher the stage number, the more the cancer has spread….TNM staging system.
| T | Description |
|---|---|
| T3a | The tumour has grown outside the prostate but not into the seminal vesicles. |