[Rare lesion in hepatoduodenal ligament].

A 60-year-old man was admitted for surgical treatment with a diagnosis of distal oesophageal carcinoma. A lymph node metastasis in the area of the hepatoduodenal ligament was suspected by preoperative CT scan and endosonographic examination. During the course of the oesophagectomy, a saccular tumour encircling the common hepatic artery was shown. The vessel and surrounding tumour were resected en bloc. Histology demonstrated a completely thrombosed true aneurysm of the common hepatic artery.