Large retroperitoneal hemangioma encompassing the renal vein

Abstract

Large retroperitoneal hemangioma encompassing the renal vein E894Cite as: Can Urol Assoc J 2015;9(11-12):E894-6. http://dx.doi.org/10.5489/cuaj.3356 Published online December 14, 2015. AbstractRetroperitoneal hemangioma (RH) is a rare and benign vascular malformation. RH may be detected incidentally or present with symptoms due to local invasion of adjacent structures. Management options include surgical resection, as well as serial observation with routine imaging. We describe a retroperitoneal hemangioma encompassing the renal vein that was discovered during diagnosis of acute appendicitis, and characterize diagnostic magnetic resonance imaging (MRI) findings seen with this condition.

Primary retroperitoneal cavernous hemangioma: An exceptional disease in adulthood

“…On T1-weighted imaging, it usually shows low signal intensity, whereas in T2-weighted imaging, hemorrhage can be interpreted with high intensity. 5,6,14 The retroperitoneal cavernous hemangioma is very difficult to diagnose before surgery. The differential diagnosis included GIST, lymphangioma cyst, or primary retroperitoneal tumors.…”

“…MRI (Magnetic resonance imaging) may help with the diagnosis. On T1‐weighted imaging, it usually shows low signal intensity, whereas in T2‐weighted imaging, hemorrhage can be interpreted with high intensity 5,6,14 …”

A retroperitoneal cavernous hemangioma arising from the gonadal vein

“…Whereas on T2-weighted imaging, hemorrhage, and hyalinization of tissue can often be interpreted with high intensity within the tumor. [ 15 – 17 ] Although we did offer the option of a MRI examination before the operation, the patient declined and instead surgery was performed after a physical exam.…”

Retroperitoneal Hemangioma: A Very Rare Case Presentation

“…Retroperitoneal Hemangioma is very rare tumour. There is no obvious gender predisposition for retroperitoneal hemangioma and cases have been reported in both children and adults (Mossanen et al, 2015). Hemangioma is histopathologically classied into capillary, cavernous, a r t e r i o v e n o u s a n d v e n o u s t y p e s .…”

“…The tissue-specic multiplanar capability of high-resolution MRI allows better tumour localization and internal characterization, thereby serving as a road map for surgical planning (Shanbhogue et al, 2012). The few reported cases of hemangioma in whom MRI was performed revealed a low signal intensity on the T1-weighted image and high signal intensity on the T2-weighted image (Igarashi & Hanazaki, 1998) (Matsuoka et al, 2018) and have been suggested to represent the haemorrhage and hyalinization of tissue (Mossanen et al, 2015). Malignant vascular tumours such as angiosarcoma, epithelioid hemangioendothelioma, and Kaposi sarcoma resemble hemangiomas ,but these tumours often have low signal central regions on T2-weighted images or multiple lesions distinguishing typical features of hemangioma (Worawattanakul et al, 1997) (Buetow et al, 1994).The imaging ndings of most retroperitoneal soft tissue tumours are nonspecic and a denitive diagnosis most often is established only by histopathologic evaluation.…”