Abstract
A 79-year-old man was admitted to a hospital because of high fever and somnolence. Computed tomography of the abdomen and ultrasonography revealed a solitary liver abscess (diameter, 5 cm) in the left abdominal lobe. The patient responded well to the administration on antibiotics and percutaneous transhepatic abscess drainage (PTAD). Several gastrointestinal examinations were performed to determine the cause of the liver abscess. Colonoscopy revealed a type 2 tumor in the rectum that resulted in well-differentiated adenocarcinoma. Cytologic test of the abscess revealed no malignant cells, and no causative oraganisms could be isolated by culture. After the abscess diminished, abscess we performed high anterior resection with D2 lymph node dissection. Histopathological findings of the resected tumor specimen were as follows : tub1, ss, n0, ly1, v0, and stage II. The patient was free from liver metastasis and liver abscess 3 years after the operation. In conclusion, pyogenic liver abscess without hepatobilliary origin requires a complete gastrointestinal evaluation.
