Type I Ureteral Triplication in an Adult Associated With an Obstructed Extravesicular Megaureter Surgically Managed With Partial Nephrectomy.

A complete ureteral triplication is a rare congenital urinary tract anomaly that typically presents in childhood. This is an exceedingly rare case of an adult male presenting with right pyelonephritis and flank pain who was subsequently diagnosed with a right type I ureteral triplication associated with an obstructed megaureter inserted into the prostatic urethra. This patient underwent a right partial nephrectomy to remove the dilated and non-functional upper renal segment leaving behind a blind ending ureteral remnant. Following partial nephrectomy, the patient's flank pain and recurrent urinary tract infections resolved despite persistent dilation of the ureteral remnant. While a standard method of surgical management for a triplicated ureter has not been well established in the adult population, in this case, partial nephrectomy has demonstrated efficacy while avoiding more invasive procedures.

A Rare Case of Primary Follicular Dendritic Cell Sarcoma of the Kidney.

The objective of this case report is to describe a rare case of primary follicular dendritic cell sarcoma (FDCS) of the kidney. FDCS is a rare soft tissue malignancy that most often presents intranodally with lymphadenopathy of the neck, mediastinum, and axilla. One-third of cases present extranodally and most commonly affect the liver, lung, and tonsils. To date, there have been few reports of retroperitoneal FDCS and, to the best of our knowledge, only two other reported cases with primary renal involvement. We present a 56-year-old female with end-stage renal disease on hemodialysis who presented to the hospital with a hypertensive emergency. Computed tomography (CT) of the abdomen was obtained revealing a left-sided renal mass and she subsequently underwent left radical nephrectomy. The pathologic features of the mass revealed oval to spindle cells with eosinophilic cytoplasm, dispersed vesicular chromatin, and small nucleoli found arranged in fascicles, whorls, and storiform patterns with occasional multinucleate forms. The neoplastic cells were immunoreactive to vimentin and expressed cell markers for CD23, CD35, and CD68. These features confirmed a final pathologic diagnosis of primary FDCS of the kidney. To our knowledge, this is the third case of primary renal FDCS reported in the literature. Extranodal FDCS is rare but does occur and needs to be on the differential diagnosis if pathologic features point to its diagnosis.

Cranial angiomatoid fibrous histiocytoma: A case report and review of literature.

BACKGROUND: Angiomatoid fibrous histiocytoma (AFH) is a rare low-grade soft-tissue tumor that typically arises from the deep dermal and subcutaneous tissue of the extremities in children and young adults. Intracranial AFH is exceedingly rare, and only four cases of primary AFH tumors have been reported to date. CASE DESCRIPTION: A 43-year-old male presented to our hospital with headaches, vision changes, and a known brain tumor suspected to be an atypical meningioma. After undergoing craniotomy for resection of the mass, the immunomorphologic features of the resected tumor showed typical features of AFH with ESWR1 (exon7) - ATF1 (exon 5) fusion. CONCLUSION: AFH is a difficult tumor to diagnose with imaging and histologic studies. Thus, further knowledge is necessary - particularly of intracranial cases - to aid clinicians in its diagnosis and management.