Journal of Diagnostics Concepts & Practice ›› 2022, Vol. 21 ›› Issue (06): 735-740.doi: 10.16150/j.1671-2870.2022.06.12

• Original article • Previous Articles     Next Articles

Paradrenal anastomosing hemangioma: a case report with literature review

YAN Huaru, LIU Kun, HAN Zhihong, FANG Zhen, WU Lili()   

  1. Department of Pathology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Received:2021-06-09 Online:2022-12-25 Published:2023-04-23
  • Contact: WU Lili E-mail:lilywu9ceh@126.com

Abstract:

Objective: This paper reported 1 case of paradrenal anastomosing hemangioma (AH), and to summarize the clinicopathological features, diagnosis and differential diagnosis of AH. Methods: The clinical data of this patient was collected, the histological morphology and immunohistochemical characteristics were observed and analyzed in combination with relevant literature. Results: The tumor was located in the adipose tissue around the adrenal gland, it was well circumscribed, gray and red colored. Microscopically, the tumor was composed of irregularly anastomosing sinusoidal-like spaces lined by hobnail endothelial cells, focal mild atypia was observed. Intravascular fibrin thrombi and hyaline globules could be seen. Immunohistochemical results showed diffuse staining for endothelial markers, including CD31 and CD34. D2-40, CK5/6, calretinin, CKpan, EMA, Melan-A and HMB45 immunostains were negative. Ki-67 staining indicated a low proliferative activity. Eventually this patient was diagnosed with AH. Conclusions: AH is a rare but distinct type of vascular neoplasm. Owing to its striking anastomosing appearance, it needs to be distinguished from well differentiated angiosarcoma. In addition, the differential diagnosis of urogenital AH also includes angiomyolipoma, adenomatoid tumor, and hemangiomatoid hyperplasia secondary to renal cell carcinoma.

Key words: Adrenal gland, Anastomosing hemangioma, Immunohistochemical feature

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