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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 ...
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.
Breast cancer classification divides breast cancer into categories according to different schemes criteria and serving a different purpose. The major categories are the histopathological type, the grade of the tumor, the stage of the tumor, and the expression of proteins and genes. As knowledge of cancer cell biology develops these ...
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.
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 ...
Oncology, pathology. Medullary breast carcinoma is a rare type of breast cancer [1] that is characterized as a relatively circumscribed tumor [2] with pushing, rather than infiltrating, margins. It is histologically characterized as poorly differentiated cells with abundant cytoplasm and pleomorphic high grade vesicular nuclei. [3]