Rhabdomyosarcoma (RMS) is the most common soft-tissue sarcoma in children. The present study reports the case of a 2-year-old female who presented with abdominal pain and a palpable abdominal mass. Radiological investigations failed to reveal the tissue origin of the mass and a tru-cut biopsy confirmed the diagnosis of embryonal RMS. Surgical excision was performed after neo-adjuvant chemotherapy. The pelvic end of the mass was observed to continue with the left medial umbilical ligament. The patient's postoperative course was uneventful, and follow-up imaging showed no evidence of recurrence. Τhe present case report is the first non-syndromic case with left umbilical medial ligament-originated RMS.
Keywords: CS; RMS; childhood; left medial ligament; urachus.
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