Ectopic immature renal tissue in gubernaculum associated with undescended testis of a 1-year-old child: A case report

RATIONALE: Ectopic immature renal tissue (EIRT) is extremely rare in congenital malformations. Moreover, the fundamental pathogenesis of EIRT is still unclear and controversial. PATIENT CONCERNS: The right scrotum of a 1-year-old man was found empty for a period of 1 month. B-ultrasonography revealed normal bilateral kidneys and a hypoechoic nodule in the right groin. DIAGNOSES: Based on B-ultrasonography, surgery and pathological examination, we concluded a case of abnormally located and EIRT in the inguinal canal. INTERVENTIONS: After pathological diagnosis, the patient was not treated with drugs. OUTCOMES: One year after the operation, the patient recovered. LESSONS: EIRT in gubernaculum is extremely rare. Because of the potential risk of malignant transformation, it is necessary to diagnose and treat it early.