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A Pancoast tumor is a tumor of the apex of the lung. It is a type of lung cancer defined primarily by its location situated at the top end of either the right or left lung. It typically spreads to nearby tissues such as the ribs and vertebrae. Most Pancoast tumors are non-small-cell lung cancers . The growing tumor can cause compression of many ...
PanNETs are a type of neuroendocrine tumor, representing about one-third of gastroenteropancreatic neuroendocrine tumors (GEP-NETs). Many PanNETs are benign, while some are malignant. Aggressive PanNET tumors have traditionally been termed "islet cell carcinoma". PanNETs are quite distinct from the usual form of pancreatic cancer, the majority ...
In 1987, the UICC and AJCC staging systems were unified into the single TNM staging system. TNM is a notation system that describes the stage of a cancer, which originates from a solid tumor, using alphanumeric codes: T describes the size of the original (primary) tumor and whether it has invaded nearby tissue, N describes nearby (regional ...
T 3 is the more metabolically active hormone produced from T 4.T 4 is deiodinated by three deiodinase enzymes to produce the more-active triiodothyronine: . Type I present in liver, kidney, thyroid, and (to a lesser extent) pituitary; it accounts for 80% of the deiodination of T 4.
A carcinoid crisis with profound flushing, bronchospasm, tachycardia, and widely and rapidly fluctuating blood pressure [1] can occur if large amounts of hormone are acutely secreted, [51] which is occasionally triggered by factors such as diet, [51] alcohol, [51] surgery [1] [51] chemotherapy, [51] embolization therapy or radiofrequency ablation.
Terminology. Invasive carcinoma NST is a type of breast cancer. It is one of the invasive breast cancers that originates from the breast ductal system, so that it is a type of ductal carcinoma. A defining feature of this ductal carcinoma is that it lacks the "specific differentiating features" of other types of ductal carcinomas.
411,600 (2015) [ 8] Pancreatic cancer arises when cells in the pancreas, a glandular organ behind the stomach, begin to multiply out of control and form a mass. These cancerous cells have the ability to invade other parts of the body. [ 9] A number of types of pancreatic cancer are known. [ 10]
Signet ring cell carcinoma (SRCC) is a rare form of highly malignant adenocarcinoma [ 1] that produces mucin. It is an epithelial malignancy characterized by the histologic appearance of signet ring cells . Primary SRCC tumors are most often found in the glandular cells of the stomach (SRCC originates in the stomach in 56 percent of patients ...