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Adenocarcinoma of the lung tends to stain mucin positive as it is derived from the mucus-producing glands of the lungs. Similar to other adenocarcinoma, if this tumor is well differentiated (low grade) it will resemble the normal glandular structure.
Well-differentiated adenocarcinomas tend to resemble the glandular tissue that they are derived from, while poorly differentiated adenocarcinomas may not. By staining the cells from a biopsy , a pathologist can determine whether the tumor is an adenocarcinoma or some other type of cancer.
Acinar adenocarcinoma of the lung is a highly lethal disease. Overall, the five-year survival rates approximate 16% to 22%. Generally, survival is better in all stages for patients with the acinar (or papillary) pattern than it is in patients with the solid pattern, but considerably worse than those with the bronchioloalveolar pattern.
This should be distinguished from cases where piles of well-differentiated mucin-producing cells appear cribriform. In such piles, nuclei show regular polarity with apical mucin, and their nuclei are not markedly enlarged. [6] Invasive adenocarcinoma commonly displays: [6] Varying degrees of gland formation with tall columnar cells; Frequently ...
Of the many cancer-specific schemes, the Gleason system, [3] named after Donald Floyd Gleason, used to grade the adenocarcinoma cells in prostate cancer is the most famous. This system uses a grading score ranging from 2 to 10. Lower Gleason scores describe well-differentiated less aggressive tumors.
The majority of cancers of unknown primary, about 90%, are adenocarcinomas, with 60% appearing as moderately to well-differentiated adenocarcinoma, while about 30% are poorly differentiated adenocarcinoma. The term adenocarcinoma refers to cancer that begins in the cells in glandular structures in the lining or covering of certain organs in the ...
Follicular carcinoma, well differentiated; M8332/3 Follicular adenocarcinoma, trabecular (C73.9) ... M8453/3 Intraductal papillary-mucinous carcinoma invasive (C25._)
Fine needle aspiration of well-differentiated pancreatic adenocarcinoma, showing a flat sheet with prominent honeycombing. The disorganization, nuclear overlapping, and lack of uniform nuclear spacing provides a clue that this is adenocarcinoma (as opposed to non-neoplastic duct epithelium).
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