Cyst of the Gallbladder with Growing Tendency -Report of a Case-

Nobuyoshi Aoyanagi, Minoru Watanabe, Mamoru Hiraishi, Ichiro Iizuka and Shigeo Hasegawa

Department of Surgery, Kohnodai Hospital National Center of Neurology and Psychiatry

We report a case of a growing gallbladder cyst successfully resected. A small elevated cystic lesion was pointed out at the fundus of the gallbladder in an 80 old man who had undergone gastrectomy for gastric cancer 3 years earlier. This cystic lesion had grown to 13 mm in diameter after 1 year of observation. Cholecystectomy showed simple unilocular cyst 13 mm in diameter at the fundus of the gallbladder filled with yellow white mucus. Histologically, the inner surface of the cyst was lined by a single layer of columnar and cuboidal epithelium with no dysplasia inside and outside the cyst. The Rokitansky-Aschoff sinus lay scattered around the cyst and the etiology was considered retention cyst due to blockade of the Rokitansky-Aschoff sinus. Although gallbladder cysts are rare, case reports of the disease are recently increasing with improvements in ultrasonic equipment. It is thus necessary to keep this disease in mind as a possible differential diagnosis of a small elevated lesion of the gallbladder.

Key words
gallbladder cyst, ultrasonography, growing tendency

Reprint requests
Nobuyoshi Aoyanagi Department of Surgery, Kohnodai Hospital national Center of Neurology and Psychiatry 1-7-1 Kohnodai, Ichikawa, 272-8516 JAPAN

Accepted
September 25, 2002

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