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Title : carcinoma cancer
link : carcinoma cancer

carcinoma cancer

What is cancer? A carcinoma is any malignant cancer that arises from epithelial cells. Carcinomas invade surrounding tissues and organs and should be metastasized or spread to lymph nodes and different sites.

"carcinoma in situ" (CIS) could be a premalignant condition, within which some cytological signs of malignancy are present, however there is no histologic evidence of invasion through the basement membrane epithelium.

Carcinoma, like all cancers, is classified by its histological appearance. Adenocarcinoma and squamous cell carcinoma, 2 common descriptive terms of tumors, reflect the actual fact that these cells could be an aspect of glandular or squamous cells, respectively. Anaplastic tumors Gravely may well be this undifferentiated way they are doing does not have a definitive histologic appearance (undifferentiated carcinoma).

Sometimes a tumor observed by the presumptive first organ (eg prostate carcinoma) or putative cell origin (hepatocellular carcinoma, renal cell carcinoma).

Metastatic carcinoma diagnosed by biopsy and fine needle aspiration, core biopsy, or subtotal removal of single node.

carcinoma staging and classification

The staging of cancers is that the degree of deployment of neoplasia. The classification is that the system used to record the tumors degree of differentiation of tissue parents.

high-grade lesions may show little differentiation and express a worse prognosis of having a kind of tumor.

As a general rule, cancer stage (using AJCC criteria) dictates ultimate prognosis.

The criteria for staging differ based primarily on organ systems. for example system bladder cancer staging colon and it depends on the depth of invasion. Breast and lung staging is further obsessed with size.

While renal carcinoma staging is based on each size and invasion into the renal sinus. Correct staging depends on clinical, radiological and pathological data knowledge.

The UICC / AJCC TNM system is commonly used, but for some common tumors, classic forms of stop (eg because the Dukes classification for colon cancer) are still used.

Types of lung carcinoma

Adenocarcinoma could be a malignant tumor that originates in the epithelial cells of glandular tissue and formation glandular structures. this is often common in the lung (which is 30-40% of all lung carcinomas). It is in the periphery, arising from goblet cells or sort II pneumocytes.

Squamous cell carcinoma due to squamous metaplasia. This represents 20-30 p.c of lung tumors and is typically hilar in origin.

little cell carcinoma is a kind of doubt because of snuff. These metastasise early, and should secrete ADH (reducing the sodium concentration of the patient).

massive undifferentiated carcinoma cells represent 10-15 p.c of pulmonary neoplasms. These are aggressive and problematic recognize due to the undifferentiated nature. These are ordinarily center within the lung.