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ACTH-Cell Pituitary Adenoma With Signet Ring Cells: A Rare Case Report and Review of The Literature

ACTH-Cell Pituitary Adenoma With Signet Ring Cells: A Rare Case Report and Review of The Literature Here, we present a case of pituitary adenoma producing adrenocorticotropic hormone (ACTH) in a 19-year-old woman. The patient was admitted to neurosurgery clinic because of a headache and decreased visual acuity. Transsphenoidal resection was performed. Microscopic examination of the tumor revealed signet-ring-like cell areas intermixed with conventional pituitary adenoma cells. Both populations of tumor cells showed immunoreactivity for chromogranin, synaptophysin, and ACTH. To date, there have been 3 reports of pituitary adenoma with signet-ring-like changes. To our knowledge, this is the first case of ACTH-secreting pituitary adenoma with signet-ring-like cell changes. The clinical reflection of signet cells in pituitary adenoma is unclear. Accumulation of the similar cases and investigation of molecular background of them may lighten the importance of this morphologic variance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Immunohistochemistry & Molecular Morphology Wolters Kluwer Health

ACTH-Cell Pituitary Adenoma With Signet Ring Cells: A Rare Case Report and Review of The Literature

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References (19)

Publisher
Wolters Kluwer Health
Copyright
Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.
ISSN
1541-2016
eISSN
1533-4058
DOI
10.1097/PAI.0000000000000639
Publisher site
See Article on Publisher Site

Abstract

Here, we present a case of pituitary adenoma producing adrenocorticotropic hormone (ACTH) in a 19-year-old woman. The patient was admitted to neurosurgery clinic because of a headache and decreased visual acuity. Transsphenoidal resection was performed. Microscopic examination of the tumor revealed signet-ring-like cell areas intermixed with conventional pituitary adenoma cells. Both populations of tumor cells showed immunoreactivity for chromogranin, synaptophysin, and ACTH. To date, there have been 3 reports of pituitary adenoma with signet-ring-like changes. To our knowledge, this is the first case of ACTH-secreting pituitary adenoma with signet-ring-like cell changes. The clinical reflection of signet cells in pituitary adenoma is unclear. Accumulation of the similar cases and investigation of molecular background of them may lighten the importance of this morphologic variance.

Journal

Applied Immunohistochemistry & Molecular Morphology – Wolters Kluwer Health

Published: Feb 1, 2020

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