Myopericytoma of the ureter Incidental finding of a benign slowly growing tumor

Victor Sandoval; Daniel Halstuch; Melissa Huynh; Bret Wehrli; Nicholas Power

doi:10.1016/j.eucr.2023.102362

Myopericytoma of the ureter Incidental finding of a benign slowly growing tumor

Urol Case Rep. 2023 Feb 21:47:102362. doi: 10.1016/j.eucr.2023.102362. eCollection 2023 Mar.

Authors

Victor Sandoval¹, Daniel Halstuch¹, Melissa Huynh¹, Bret Wehrli², Nicholas Power¹

Affiliations

¹ Western University, London Health Science Center (LHSC), 151 Richmond St, London, ON, N6A 3K7, Canada.
² Western University, University Hospital (UH), 151 Richmond St, London, ON, N6A 3K7, Canada.

Abstract

We present a unique case of a 6 cm, incidental, ureteral myopericytoma which was initially believed to be an ovarian tumor with mass effect, causing hydroureteronephrosis. A 75-year-old woman presented with a three-month history of postprandial cramps and heartburn. A right distal ureterectomy with en-bloc resection of the mass was performed. Histologically, a well-circumscribed, cellular proliferation of uniform, cytologically bland, spindle cells was identified that had a multilayered, concentric growth pattern around numerous blood vessels. Immunohistochemically, the spindle lesional cells stained strongly and diffusely with antibodies against smooth muscle actin and failed to stain for pancytokeratin and S100 protein.

Keywords: Benign; Myopericytoma; Tumor; Ureter.

Publication types

Case Reports