Pericaliceal Haemangioma-A Cause of Papillary Necrosis? Case Report and Review of 7 Similar Vascular Lesions

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Abstract
A pericaliceal hemangioma associated with papillary necrosis caused hematuria which led to nephrectomy. Seven similar vascular lesions were found on review of the surgical histopathology records from the last 25 yr at the St. Peter''s Hospitals, Institute of Urology, London [England, UK]. In 4 of these-there was histological evidence of damage to the renal papilla adjacent to the vascular abnormality; a possible mechanism for these changes is discussed. In all 8 cases the patients presented with hematuria, and in 5, abnormalities were seen on renal radiological investigation. Nephrectomy was performed in 5 instances and the remaining 3 patients were treated by partial nephrectomy. The presence of a vascular malformation was considered preoperatively in 2 patients and in the remainder the diagnosis was first made on laboratory examination. In all patients hematuria ceased postoperatively, and in 5 cases where follow-up information was available, there was no evidence of bilateral involvement.