Haemangiopericytoma of the Bladder

Hemangiopericytoma arising from the wall of the urinary bladder

“…Adjuvant radiotheraphy is now considered a valuable modality for local management of HPCs. According to the literature adjunct chemotherapy has been used with limited success [5]. Our case's treatment was different from the cases in the literature.…”

“…Follow-up of patients after removal of HPC necessitates long-term periodic CT scans, even complete resection due to the location of the disease, high local recurrence rates, and possible metastases [5]. We followed this patient for 2 years and there was no local recurrence and metastases.…”

Soft tissue tumors of the urinary bladder

“…Hemangiopericytomas are slowly enlarging painless masses, often presenting late in their course, at which time obstructive symptoms may occur. Groin pain, urinary frequency, dysuria, and acute urinary retention have been reported [43,44,47,48]. Despite its deceptively benign appearance, hemangiopericytoma is associated with a 50% incidence of eventual metastasis [43].…”

“…Rare cases of hemangiopericytoma have been reported in the urinary bladder [43][44][45][46][47][48]. The tumor typically occurs in adults with an average age of 45 years [19].…”

“…Microscopically, hemangiopericytoma is composed of an elaborate arrangement of vascular spaces consisting of proliferating blood vessels surrounded by numerous, tightly packed ovoid and spindle-shaped pericytes [19,47]. The vessels vary in caliber and branch into smaller vessels with a bstaghornQ configuration [19].…”