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For example, "Patient M" presents to his local emergency room for abdominal pain and a CT is ordered to rule-out appendicitis; however, the radiologist notes there is a 3.5 centimeter right adrenal mass. [citation needed]
Multiple endocrine neoplasia type 2 (also known as "Pheochromocytoma (codons 630 and 634) and amyloid producing medullary thyroid carcinoma", [1] "PTC syndrome," [1] and "Sipple syndrome" [1]) is a group of medical disorders associated with tumors of the endocrine system. The tumors may be benign or malignant .
Pheochromocytoma is a neoplasm composed of cells similar to the chromaffin cells of the mature adrenal medulla. Pheochromocytomas occur in patients of all ages, and may be sporadic, or associated with a hereditary cancer syndrome , such as multiple endocrine neoplasia (MEN) types IIA and IIB, neurofibromatosis type I, or von Hippel–Lindau ...
A zellballen is a small nest of chromaffin cells or chief cells with pale eosinophilic staining. Zellballen are separated into groups by segmenting bands of fibrovascular stroma, and are surrounded by supporting sustentacular cells. [1]
In 1966 Williams et al. described the combination of mucosal neuromas, pheochromocytoma and medullary thyroid carcinoma. [ citation needed ] In 1968 Steiner et al. introduced the term "multiple endocrine neoplasias" (MEN) to describe disorders featuring combinations of endocrine tumors and proposed the terms 'Wermer syndrome' for MEN 1 and ...
When the same type of tumor is found in the adrenal gland, they are referred to as a pheochromocytoma. They are rare tumors, with an overall estimated incidence of 1 in 300,000. [1] There is no test that determines benign from malignant tumors; long-term follow-up is therefore recommended for all individuals with paraganglioma. [2]
The Pacak-Zhuang syndrome is a recently described disease manifestation in females that includes multiple paragangliomas or pheochromocytomas and somatostatinomas (in some), both neuroendocrine tumors, and secondary polycythemia associated with high erythropoietin levels.
PC12 is a cell line derived from a pheochromocytoma of the rat adrenal medulla, that have an embryonic origin from the neural crest that has a mixture of neuroblastic cells and eosinophilic cells. [ 1 ] [ 2 ] [ 3 ]