Search results
Results from the WOW.Com Content Network
A paraganglioma is a rare neuroendocrine neoplasm that may develop at various body sites (including the head, neck, thorax and abdomen). When the same type of tumor is found in the adrenal gland, they are referred to as a pheochromocytoma .
GP consist of three components (1) ganglion cells, (2) epithelioid cells (neuroendocrine-like), and (3) spindle cells (schwannoma-like). The microscopic differential diagnosis includes poorly differentiated carcinoma, neuroendocrine tumour and paraganglioma. [1] GPs may be sporadic or arise in the context neurofibromatosis type 1.
[2]: 670 They account for less than 2% of all soft tissue tumors. [3] The majority of glomus tumors are benign, but they can also show malignant features. [4] Glomus tumors were first described by Hoyer in 1877 while the first complete clinical description was given by Masson in 1924. [5]
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]
Ganglioneuroma (occasionally called a "ganglioma") is a rare and benign tumor of the autonomic nerve fibers arising from neural crest sympathogonia (undifferentiated cells of the sympathetic nervous system). [1]
It can be the source of paraganglioma. [8]The organ of Zuckerkandl is of pathological significance in the adult as a common extra-adrenal site of pheochromocytoma though the most common extra-adrenal site is in the superior para-aortic region between the diaphragm and lower renal poles.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Limited to the pancreas, less than or equal to 2 cm in size T2: Limited to the pancreas, 2–4 cm in size T3: Limited to the pancreas, > 4 cm; or invading the duodenum or bile duct T4: Invading adjacent organs or the wall of large vessels Regional Lymph Node (N) N Category N Criteria NX: Regional lymph nodes cannot be assessed N0