Splenogonadal fusion: A rare paratesticular lesion and how to recognise it on ultrasound.

INTRODUCTION: Splenogonadal fusion is a rare developmental disorder that results in a gonadal or paragonadal mass due to the close proximity of the developing spleen and gonad. CASE REPORT: We describe a case of splenogonadal fusion presenting as a paratesticular mass in a 25-year-old male. This was ultimately diagnosed on surgical biopsy. DISCUSSION: Splenogonadal fusion is a rare abnormality but can be managed conservatively. The sonographic features and the differential diagnosis are highlighted.
CONCLUSION: Through this case, we highlight the clinical and sonographic features of splenogonadal fusion. Awareness amongst ultrasound practitioners is important, given that it can be managed conservatively, and means of a non-invasive diagnosis are highlighted. © The British Medical Ultrasound Society 2019.