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Updated: Jul 20, 2026
05:30
Laparoscopic Anatomical Right Hemihepatectomy via the In Situ Anterior Approach
Published on: August 8, 2025
Primary peritoneal epithelioid hemangioendothelioma
Lorena Posligua1, Florencia Anatelli, Louis P Dehner
1Lauren V. Ackerman Laboratory of Surgical Pathology, Barnes-Jewish Hospital, Washington University Medical Center, St. Louis, Missouri, USA.
International Journal of Surgical Pathology
|September 9, 2006
Summary
Epithelioid hemangioendothelioma (EHE) is a rare vascular tumor. This study details peritoneal EHE cases, highlighting diagnostic features and immunohistochemistry for accurate identification.
Area of Science:
- Oncology
- Pathology
- Vascular Neoplasms
Background:
- Epithelioid hemangioendothelioma (EHE) is an uncommon, intermediate-grade malignant vascular tumor.
- It can arise in various organs and soft tissues, posing diagnostic challenges due to its rarity and resemblance to other peritoneal neoplasms.
Observation:
- This report presents 3 primary peritoneal epithelioid hemangioendothelioma (EHE) cases and reviews 7 prior cases.
- The study established demographic, clinical, morphologic, immunohistochemical, and ultrastructural features of peritoneal EHE.
Findings:
- Light microscopic features of peritoneal EHE are similar to EHE in other conventional sites like the liver.
- Immunohistochemical analysis is crucial for diagnosis, requiring positivity for at least one endothelial marker (CD31, CD34, or factor VIII).
Implications:
- Accurate diagnosis of peritoneal EHE can be achieved by recognizing specific characteristics.
- This research aids in distinguishing peritoneal EHE from other peritoneal tumors, improving patient management.
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