A Case Clonorchis sinensis Infection Diagnosed as a Polypoid Disease of Gallbladder

Naoya Inoue, Yoshiro Taki, Toshihiro Kawahira, Shigeru Sakano, Fumio Rai, Sumio Tominaga, Michiharu Hanaoka, Susumu Kubota*, Toshimasa Nishiyama**

Department of Surgery and Radiology*, Shinko Hospital
Department of Paracitology, Nara Medical University**

We experienced a case of Clonorchis sinenesis diagnosed as a proliferated disease of gallbladder. A 60-year-old man admitted our hospital under the diagnosis of gallbladder polyp. He complained a weight loss without any other symptom. Ultrasonic examination showed a polypoid lesion in the gallbladder which was 30 mm in diameter. By the Computed Tomography, only a small low dencity area was observed. Malignancy could not be ruled out and the patient underwent surgery. Hematoma was found in the gallbladder without any pathological lesion. Ova of Clonorchis sinensis were found by the pathological examination after surgery. Stool sample wlas examined and it was positive for ova. Praziquantel (80 mg/kg) was administrated. Tow weeks later, ova was negative in stool. Clonorchis sinensis infection is usually diagnosed by the abdominal symptom, such as abdominal pain or liver enlargement. It is very rare that this infection was found as a polypoid lesion in gallbladder without any abdominal symptom.

Key words
Clonorchis Sinensis, gallbladder polyp, praziquantel

Reprint requests
Yoshiro Taki Department of Surgery, Shinko Hospital
1-4-47 Wakinohama-cho, Chuo-ku, Kobe, 651 JAPAN

Accepted
July 10, 1996

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