Seminoma Arising from Cryptorchidism Presenting as a Giant Extraperitoneal Abdominal Mass: A Case Report

Abstract

Listen

Translate article

<i>Background</i>: Preperitoneum cryptorchidism is infrequent in adults, and has an extremely high risk of malignant transformation. The diagnosis requires a comprehensive consideration of symptoms, findings upon physical examination, and laboratory and imaging tests. <i>Case information: </i>We report a case of a 38-year-old man with a massive abdominal mass corresponding to a seminoma arising from cryptorchidism. Contrast-enhanced computer tomography demonstrated a large mass with clear realm and uneven density. The testicular artery was found to originate from the left iliac fossa, and could be traced back to the abdominal aorta. The left spermatic cord was not present within the inguinal canal. <i>Result:</i> Laparotomy was performed with midline incision, and we did not enter the abdominal cavity, wherein a large solid mass was identified in the preperitoneum, with the vascular pedicle originating in the left iliac fossa. The mass was resected en bloc. The pathological evaluation of the resected specimen was compatible with seminoma. The patient was referred to the department of oncology after discharge. The patient completed four cycles of etoposide/cisplatin adjuvant chemotherapy. The five-year follow-up showed no evidence of local or distant disease recurrence. <i>Conclusions</i>: Malignant transformation of cryptorchidism can present as an abdominal mass, and clinicians must be aware of this possibility, in order to provide opportune diagnosis.