Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review

Strumal carcinoid tumors of the ovary are rare neoplasms composed of an intimate mixture of thyroid and carcinoid tissues. Although various theories regarding their histogenesis have been proposed, evidence confirming the origin of the carcinoid component has been lacking. We report a case of a 40-y...

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Main Authors: Yu Liu, Asra Feroze, Liz Yang, Ridin Balakrishnan
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Diagnostics
Subjects:
Online Access:https://www.mdpi.com/2075-4418/15/10/1249
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author Yu Liu
Asra Feroze
Liz Yang
Ridin Balakrishnan
author_facet Yu Liu
Asra Feroze
Liz Yang
Ridin Balakrishnan
author_sort Yu Liu
collection DOAJ
description Strumal carcinoid tumors of the ovary are rare neoplasms composed of an intimate mixture of thyroid and carcinoid tissues. Although various theories regarding their histogenesis have been proposed, evidence confirming the origin of the carcinoid component has been lacking. We report a case of a 40-year-old female with an ovarian strumal carcinoid arising in the background of a mature cystic teratoma. Morphological and immunohistochemical findings support the hypothesis that the carcinoid component originates from the thyroid follicular epithelium, undergoing neuroendocrine differentiation. A single-cell growth pattern was also identified, expanding the known histological spectrum of strumal carcinoids. Our case provides additional immunohistochemical support for the histogenetic origin of strumal carcinoids, offering new insights into their pathogenesis. Recognizing these distinct patterns of staining and unusual morphology is critical for accurate diagnosis and differentiation from metastatic disease.
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publisher MDPI AG
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series Diagnostics
spelling doaj-art-a872276de1ce4f6aa6233392d57705282025-08-20T02:33:55ZengMDPI AGDiagnostics2075-44182025-05-011510124910.3390/diagnostics15101249Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature ReviewYu Liu0Asra Feroze1Liz Yang2Ridin Balakrishnan3Department of Pathology, LSUHSC School of Medicine, New Orleans, LA 70112, USADepartment of Pathology, LSUHSC School of Medicine, New Orleans, LA 70112, USADepartment of Pathology, LSUHSC School of Medicine, New Orleans, LA 70112, USADepartment of Pathology, LSUHSC School of Medicine, New Orleans, LA 70112, USAStrumal carcinoid tumors of the ovary are rare neoplasms composed of an intimate mixture of thyroid and carcinoid tissues. Although various theories regarding their histogenesis have been proposed, evidence confirming the origin of the carcinoid component has been lacking. We report a case of a 40-year-old female with an ovarian strumal carcinoid arising in the background of a mature cystic teratoma. Morphological and immunohistochemical findings support the hypothesis that the carcinoid component originates from the thyroid follicular epithelium, undergoing neuroendocrine differentiation. A single-cell growth pattern was also identified, expanding the known histological spectrum of strumal carcinoids. Our case provides additional immunohistochemical support for the histogenetic origin of strumal carcinoids, offering new insights into their pathogenesis. Recognizing these distinct patterns of staining and unusual morphology is critical for accurate diagnosis and differentiation from metastatic disease.https://www.mdpi.com/2075-4418/15/10/1249ovarystrumal carcinoidstrumal ovariithyroidsingle cell patternTTF-1
spellingShingle Yu Liu
Asra Feroze
Liz Yang
Ridin Balakrishnan
Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
Diagnostics
ovary
strumal carcinoid
strumal ovarii
thyroid
single cell pattern
TTF-1
title Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
title_full Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
title_fullStr Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
title_full_unstemmed Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
title_short Morphological and Immunohistochemical Support for the Origin of the Carcinoid Component in Strumal Carcinoids: A Case Report and Literature Review
title_sort morphological and immunohistochemical support for the origin of the carcinoid component in strumal carcinoids a case report and literature review
topic ovary
strumal carcinoid
strumal ovarii
thyroid
single cell pattern
TTF-1
url https://www.mdpi.com/2075-4418/15/10/1249
work_keys_str_mv AT yuliu morphologicalandimmunohistochemicalsupportfortheoriginofthecarcinoidcomponentinstrumalcarcinoidsacasereportandliteraturereview
AT asraferoze morphologicalandimmunohistochemicalsupportfortheoriginofthecarcinoidcomponentinstrumalcarcinoidsacasereportandliteraturereview
AT lizyang morphologicalandimmunohistochemicalsupportfortheoriginofthecarcinoidcomponentinstrumalcarcinoidsacasereportandliteraturereview
AT ridinbalakrishnan morphologicalandimmunohistochemicalsupportfortheoriginofthecarcinoidcomponentinstrumalcarcinoidsacasereportandliteraturereview