Abstract
IntroductionHemangiopericytoma is an uncommon perivascular tumor. Rectal Hemangiopericytomas are extremely rare. To the best of our knowledge, only two cases have been reported in the literature.Case presentationWe report the case of a 37-year-old Asian woman with an Hemangiopericytoma rising from the anterior wall of her rectum. Abdominopelvic computed tomography showed a 7.4 cm solid mass between her uterus and her rectum. Heterogeneous gradual enhancement after intravenous injection of contrast material was noted with several tortuous vessels around her tumor. Intra-operative findings indicated a capsule and well-circumscribed solid tumor connecting with the anterior wall of her rectum by a small pedicle. With immunohistochemical stains, her tumor cells reacted positive for Bcl-2, CD34, and ki67 and negative for CD10, CD117, S100, and Desmin. Follow-up computed tomography scans have shown no tumor recurrence or metastasis signs.ConclusionsRectal Hemangiopericytoma is a rare tumor with non-specific imaging findings. Hemangiopericytomas should be included in the differential list when a massive tumor with heterogeneously gradual enhancement in the regions of the rectum is encountered.
Highlights
Rectal Hemangiopericytoma is a rare tumor with non-specific imaging findings
Hemangiopericytomas should be included in the differential list when a massive tumor with heterogeneously gradual enhancement in the regions of the rectum is encountered
We report the clinical, ultrasonongraphy, and dynamic contrast-enhanced computed tomography (CT) findings of an HPC rising from the rectal anterior wall of a 37-year-old woman
Summary
Hemangiopericytoma (HPC), an uncommon perivascular tumor, accounts for 1% of primary vascular tumors and occurs most frequently in the extremities, pelvis, head and neck, and meninges [1]. This tumor is generally rare in the gastrointestinal tract. We report the clinical, ultrasonongraphy, and dynamic contrast-enhanced computed tomography (CT) findings of an HPC rising from the rectal anterior wall of a 37-year-old woman. A vaginal palpation revealed a hard, adhering, and painless mass. Mesenchymal tumor with spindle and oval cells (Figure 2A). Follow-up pelvis US and CT examinations revealed no tumor recurrence or metastasis signs six months after surgery
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