An extrarenal Wilms' tumour arising from an undescended testis.
D003456:Cryptorchidism / Q000150:complications*; D006801:Humans; D007223:Infant; D008297:Male; D013736:Testicular Neoplasms / Q000150:complications / Q000473:pathology*; D009396:Wilms Tumor / Q000150:complications / Q000473:pathology*