Year : 2003 | Volume
: 20 | Issue : 1 | Page : 62--63
Hemangiopericytoma of pelvis: A case report
Vishwajeet Singh, M Raghavendran, Rakesh Kapoor
Department of Urology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
Department of Urology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow - 226 014
|How to cite this article:|
Singh V, Raghavendran M, Kapoor R. Hemangiopericytoma of pelvis: A case report.Indian J Urol 2003;20:62-63
|How to cite this URL:|
Singh V, Raghavendran M, Kapoor R. Hemangiopericytoma of pelvis: A case report. Indian J Urol [serial online] 2003 [cited 2020 Aug 10 ];20:62-63
Available from: http://www.indianjurol.com/text.asp?2003/20/1/62/37129
A 40-year-old female presented with recurrent suprapubic and right flank pain, dysuria and mild hematuria for 3 months. She had a history of total abdominal hysterectomy for dysfunctional uterine bleeding one and half years earlier. Her general physical examination revealed right lower limb lymphedema. Abdominal examination showed an 8x8 cm hard, irregular pelvic mass. On per vaginal examination, a hard, mild tender mass was felt on the right side of the vaginal vault and per rectal examination revealed a hard, nodular, extraluminal mass. The ultrasound of abdomen showed a 7.9x8.2x8.0 cm. mass of mixed echogenicity lying posterolateral to the urinary bladder with gross hydroureteronephrosis on the right side. The CECT scan of the abdomen and pelvis [Figure 1] showed a 9.7x5.9x13 cm moderately enhancing heterogenous mass arising from the pelvis posterior to the urinary bladder. 99m Tc DTPA scan showed a very poorly functioning right kidney and a normal left kidney. Fine needle aspiration cytology of this mass revealed mesenchymal neoplasm. Cystopanendoscopy showed the bulging of the posterior wall of the urinary bladder. There was no other associated finding. On exploratory laparotomy, a densely adherent retroperitoneal mass was present between the bladder and rectosigmoid with right gross hydroureteronephrosis. The mass was resected almost completely with right nephrouretrectomy. The histopathological examination of tumor mass showed tightly packed small spindle cells distributed around small, thin walled, compressed irregular endothelium lined vascular channels. Occasional, less than 4 mitotic figures/10 hpf, were seen [Figure 2]. Immunohistochemical stain was suggestive of hemangiopericytoma. The right kidney had changes of chronic pyelonephritis. At one-and-half-year follow-up there was no evidence of regrowth.
Clinically, hemangiopericytoma usually presents as a painless growing mass. However pain may result from pressure upon adjacent nerves.  Hemangiopericytoma of pelvis may cause urinary symptoms, hydroureteronephrosis or even urinary retention.  In some cases dysuria hematuria or constipation are reported.  The hemangiopericytoma is a vascular tumor, but differentiating hemangipericytoma from other richly vascular soft tissue neoplasms remains a diagnostic dilemma.  Positive immunohistochemical staining of tumor biopsy with factor 8-R Ag is suggestive of but not specific for hemangiopericytoma.  There have been great problems in formulating reliable criteria for distinguishing malignant and benign hemangiopericytoma.  Enzinger and Smith described the characteristic features of the malignant form as increased cellularity, prominent mitotic activity and foci of hemorrhage and necrosis. Local and distant recurrences are seen in 19-52% cases.  All resectable hemangiopericytoma should be treated with wide local excision. Radiotherapy and chemotherapy have traditionally been reserved for non-resectable and metastatic diseases. Hemangiopericytoma is a diagnosis of exclusion and surgical resection is the only method of achieving cure.  Hemangiopericytoma is often a painless tumor. The presentation with pain and urological symptoms are uncommon.  In our patient the histopathological examination showed few mitotic figures, suggesting benign nature of the tumor. If residual tumor is left, it usually does not cause any problem.
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