Abstract
We report a rare case of primary liver adenosquamous carcinoma. The 79-year-old male patient had a 6.5cm liver tumor with almost clear borders localized by abdominal CT at the medial segment and anterior segment near ventral side. The tumor border was slightly enhanced, and the inside was slightly enhanced and heterogeneous. Necrosis and liquefaction were suspected in part of the tumor by MRI. Extended left hepatectomy associated with portal vein resection was performed under a diagnosis of intrahepatic cholangiocarcinoma. The border of the resected tumor tissue and circumference were comparatively clear. The inside of the tumor was solid and gray-white, but fragile and partly collapsed. The tumor was diagnosed as adenosquamous carcinoma. The patient died without recurrence at 3 years 3 months after surgery. Because this tumor enlarged rapidly and had central necrosis, enhancement at the tumor border and internal necrotic change are important findings indicative of adenosquamous carcinoma.
