Harlequin syndrome with petechiae caused by a pituitary adenoma

2021 ◽  
Author(s):  
Hye One Kim ◽  
Jin Cheol Kim ◽  
Bo Young Chung ◽  
Seok Young Kang ◽  
Chun Wook Park ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Harlequin Syndrome

Association of pituitary adenoma with neuronal christoma: A TEM study

1994 ◽  
Vol 52 ◽  
pp. 232-233
Author(s):  
Eva Horvath ◽  
Kalman Kovacs ◽  
B. W. Scheithauer ◽  
R. V. Lloyd ◽  
H. S. Smyth
Keyword(s):  
Growth Hormone ◽  
Pituitary Adenoma ◽  
Pituitary Tumor ◽  
Nervous Tissue ◽  
Alternative Explanation ◽  
Growth Hormone Releasing Hormone ◽  
Cell Hyperplasia ◽  
Releasing Hormone ◽  
Secretory Neurons

The association of a pituitary adenoma with nervous tissue consisting of neuron-like cells and neuropil is a rare abnormality. In the majority of cases, the pituitary tumor is a chromophobic adenoma, accompanied by acromegaly. Histology reveals widely variable proportions of endocrine and nervous tissue in alternating or intermingled patterns. The lesion is perceived as a composite one consisting of two histogenetically distinct parts. It has been suggested that the neuronal component, morphologically similar to secretory neurons of the hypothalamus, may initiate adenoma formation by releasing stimulatory substances. Immunoreactivity for growth hormone releasing hormone (GRH) in the neuronal component of some cases supported this view, whereas other findings such as consistent lack of growth hormone (GH) cell hyperplasia in the lesions called for alternative explanation.Fifteen tumors consisting of a pituitary adenoma and a neuronal component have been collected over a 20 yr. period. Acromegaly was present in 11 patients, was equivocal in one, and absent in 3.

Abstract #847: Clinical Acromegaly Without Pituitary Adenoma

2017 ◽  
Vol 23 ◽  
pp. 187
Author(s):  
Mindy Griffith ◽  
Padma Raghavan ◽  
Monica Schwarcz ◽  
Michael Goldberg ◽  
Guy Valiquette ◽  
...  
Keyword(s):  
Pituitary Adenoma

Atypical Pituitary Adenoma: A Clinicopathologic Case Series

2016 ◽  
Vol 77 (S 01) ◽  
Author(s):  
Martin Rutkowski ◽  
Ryan Alward ◽  
Derek Southwell ◽  
Rebecca Chen ◽  
Jeffrey Wagner ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Case Series ◽  
Atypical Pituitary Adenoma

Primary Pituitary Malignant Lymphoma Was Difficult to Differentiate from Nonfunctioning Pituitary Adenoma: A Case Report

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Yuta Murakami ◽  
Shinya Jinguji ◽  
Yugo Kishida ◽  
Taku Sato ◽  
Tadashi Watanabe ◽  
...  
Keyword(s):  
Case Report ◽  
Pituitary Adenoma ◽  
Malignant Lymphoma ◽  
Nonfunctioning Pituitary Adenoma

Spectrum of Visual Deficits Associated with Pituitary Adenoma and Factors Determining Visual Outcome in More Than 2,000 Eyes

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Sivashanmugam Dhandapani ◽  
Pinaki Dutta ◽  
Tenzin Gyurmey ◽  
Reema Bansal ◽  
Ashis Pathak ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Visual Outcome ◽  
Visual Deficits

Evaluation of Fine Feeding System and Angioarchitecture of Giant Pituitary Adenoma

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Yoshikazu Ogawa ◽  
Kenichi Sato ◽  
Yasushi Matsumoto ◽  
Teiji Tominaga
Keyword(s):  
Pituitary Adenoma ◽  
Feeding System ◽  
Giant Pituitary Adenoma
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