[Congenital vascular leiomyosarcoma].

Introduction: Vascular leiomyosarcoma is a conjunctive tumor which develops in the smooth muscle cells of vessel walls. Proximal vascular leiomyosarcoma involving the large vessels and peripheral vascular leiomyosarcoma which develops in the vascular pedicles of the limbs and subcutaneous vessels are distinguished.

Observation: We report the case of a 6-year-old child who presented from birth a peripheral vascular leiomyosarcoma.

An unusual case of multilocular cystic nephroma with prominent renal pelvis involvement.

Multilocular cystic nephroma (MCN) is a relatively rare, benign tumor of uncertain etiology. It typically arises from the renal parenchyma and is often treated with nephrectomy. We report a case of MCN with unusual prominent renal pelvis extension.