MON-417 Is There a Cut-Off of Ki-67 Indicative of Pituitary Carcinoma?
نویسندگان
چکیده
منابع مشابه
Clinical Significance of Ki-67 Labeling Index in Pituitary Macroadenoma
The aim of our study was to investigate the correlation of the proliferative activity of pituitary neoplasms with clinical characteristics and recurrences. Tumor specimens were obtained from 44 consecutive patients with pituitary macroadenomas who underwent surgery between July 1998 and August 2003. Specimens were immediately fixed in 10% buffered formalin and then embedded in paraffin. The Ki-...
متن کاملAggressive pituitary lesion with a remarkably high Ki-67.
The uncommon aggressive pituitary tumors are named carcinomas when metastases are detected, either in the central nervous system and/or systemically. Some cases are associated with hormonal overproduction, but most are diagnosed because of local symptoms. These neoplasias are generally refractory to current treatments. A 51 year-old woman presented sudden onset of headache, left arm paresis and...
متن کاملImmunohistochemical Assessment of Ki-67 Expression in Adenoid Cystic Carcinoma of the Salivary Glands
Objective Adenoid cystic carcinoma (ACC) is a rare malignant tumor originating from the salivary glands. It’s rather bland histological appearance that masks its ultimate biological aggressiveness. Evaluation of cell cycle and mitoses have been useful in predicting malignancy in many tumors. Ki-67 antigen is a human nuclear antigen that presents during all active phases of cell cycle. The aim ...
متن کاملProthymosin-alpha and Ki-67 expression in pituitary adenomas.
INTRODUCTION Prothymosin alpha (PTMA), a nuclear oncoprotein involved in cell cycle regulation, is used as a prognostic marker in many cancers. The histopathology of pituitary carcinomas and locally invasive adenomas is indistinguishable from that of benign tumors. A new marker is needed to differentiate these lesions. We evaluated PTMA in pituitary adenomas to determine its usefulness as a pro...
متن کاملImmunohistochemical staining of Ki-67 using the monoclonal antibody Ki-s11 is a prognostic indicator for laryngeal squamous cell carcinoma.
BACKGROUND Proliferative activity has been shown to be of prognostic significance for several malignancies. Ki-67, a cell cycle associated antigen, is regarded as a promising proliferation marker. Very few results on the proliferative activity of head and neck cancer and their potential prognostic value are available. MATERIALS AND METHODS The proliferative activity of 104 squamous cell carci...
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ژورنال
عنوان ژورنال: Journal of the Endocrine Society
سال: 2019
ISSN: 2472-1972
DOI: 10.1210/js.2019-mon-417