Peritoneal chronic inflammatory mass formation due to gallstones lost during laparoscopic cholecystectomy.
We here describe the radiologic findings of peritoneal chronic abscess formation due to gallstones lost within the peritoneum during laparoscopic cholecystectomy (LC). A radiologic workup 7 months after LC revealed a soft-tissue mass with contrast enhancement, harboring internal necrosis and punctate calcium located in the Morrison's pouch. The mass exhibited restricted water molecule diffusion, absence of fat deposition, and increased F-18 fluorodeoxy-D-glucose uptake, thus mimicking a malignant tumor. The biopsy revealed an inflammatory granuloma. Another patient with similar findings was treated with percutaneous abscess drainage. Thus, radiologists should be aware of this disease condition and its imaging findings.
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Yoshifumi
Y
Noda
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan. Electronic address: masa_gif@yahoo.co.jp.
Masayuki
M
Kanematsu
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Satoshi
S
Goshima
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Hiroshi
H
Kondo
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Haruo
H
Watanabe
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Hiroshi
H
Kawada
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Nobuyuki
N
Kawai
Department of Radiology, Gifu University Hospital, 1-1 Yanagido, Gifu, 501-1194, Japan.
Yukichi
Y
Tanahashi
D000328:Adult; D017081:Cholecystectomy, Laparoscopic / Q000009:adverse effects*; D002908:Chronic Disease; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D042882:Gallstones / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010537:Peritoneum / Q000000981:diagnostic imaging / Q000473:pathology*; D010538:Peritonitis / Q000175:diagnosis / Q000209:etiology*; D011183:Postoperative Complications / Q000175:diagnosis* / Q000209:etiology; D014057:Tomography, X-Ray Computed / Q000379:methods*
Computed tomography; Laparoscopic cholecystectomy; Lost gallstone; Peritoneal chronic abscess formation