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(A)Lymphoepitelioma-like carcinoma: Poorly differentiated cells (red arrow) arranged in solid nests, tubules and trabeculae with poorly demarcated, infiltrative margins; intratumoral lymphoid infiltrate is extremely abundant. (B) Cribiform comedo-type carcinoma: Cribriform gland (yellow arrow) with central necrosis comedo-like (yellow asterisk).
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Gleason scores are often grouped together, based on similar behaviour: Grade 2-4 as well-differentiated, Grade 5-6 as intermediately-differentiated, Grade 7 as moderately to poorly differentiated (either 3+4=7, where the majority is pattern 3, or 4+3=7 in which pattern 4 dominates and indicates less differentiation., [6] and Grade 8-10 as "high ...
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.
IDCP associated with invasive carcinoma (IDCP-inv) generally represents a growth pattern of invasive prostatic adenocarcinoma while the rarely encountered pure IDCP is a precursor of prostate cancer. [20] The diagnostic criterion of nuclear size at least 6 times normal is ambiguous as size could refer to either nuclear area or diameter.
G (1–4): the grade of the cancer cells (i.e. they are "low grade" if they appear similar to normal cells, and "high grade" if they appear poorly differentiated) S (0–3): elevation of serum tumor markers; R (0–2): the completeness of the operation (resection-boundaries free of cancer cells or not) Pn (0–1): invasion into adjunct nerves
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.
Fetal adenocarcinoma (FA) of the lung is a rare subtype of pulmonary adenocarcinoma that exhibits tissue architecture and cell characteristics that resemble fetal lung tissue upon microscopic examination. It is currently considered a variant of solid adenocarcinoma with mucin production. [1]