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This case report describes the case of a 37-year-old man that noticed an intrascrotal right mass with 1 month of evolution. During physical exam presented with a large mass at the inferior portion of the right testicle, clearly separated from the testicle, with a tender consistency and mobile. An ultrasound was performed that showed a solid and subcutaneous nodular lesion, extra testicular, heterogeneous, measuring 7.2 cm. Pelvic magnetic resonance imageMRI showed a lesion compatible with a lipoma. The patient was subjected to surgical excision of the lesion by scrotal access, having histology revealed a lipoblastoma (LB) of the scrotum. Histological diagnosis was obtained by microscopic characteristics (well-circumscribed fatty neoplasm) and immunohistochemistry (stains for CD34, S100 protein and PLAG1 were positive; stains for MDM2 and CDK4 were negative). LB is extremely rare after adolescence in any location, being this first described case of intrascrotal LB described in adulthood., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.)

Lipoblastomas are rare benign mesenchymal tumors of fetal white fat tissue appearing most commonly in children under 3 years of age, and usually affecting the extremities. Only nine cases of intrascrotal lipoblastoma have been reported to our knowledge, and although they are benign, in one case an orchidectomy was performed. We describe two new cases of intrascrotal lipoblastoma, and review the literature., (Copyright © 2013 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved.)

Based on a case report of an intrascrotal lipoblastoma in childhood, we present the preoperative diagnostic algorithm and the main differential diagnoses in testicular and paratesticular tumors as well as their surgical management. An 8-week-old infant was admitted with a scrotal tumor known since birth. MRI showed a pinnate vessel supply, originating in the left internal iliac artery. The tumor was exposed operatively and could be completely removed. Intrascrotal lipoblastoma are rare. Like most testicular and paratesticular tumors in childhood lipoblastomas are benign. Today ultrasound and Doppler sonography are basic tools for diagnosis and surgical planning in testicular and scrotal tumors in childhood. In some cases MRI can provide additional important information for surgical planning. In contrast to adults testis sparing surgery is favoured in children.