Portal gas in a patient with acute obstructive cholangitis: report of a case with emphasis on US findings.
Portal gas is relatively rare, and its relationship to ischemic bowel diseases has been emphasized. We report the case of a 70-year-old woman with acute obstructive cholangitis in whom portal gas was detected by ultrasonography (US) but not by computed tomography (CT). The former showed multiple echo spots moving in the portal vein. Doppler signals confirmed them to be bidirectional and spiky, which immediately led to the diagnosis of portal gas. Immediate appropriate antibiotic treatment and biliary drainage yielded the disappearance of the portal gas. We stress the usefulness of US and Doppler US for detecting and diagnosing portal gas. Our observation suggests that when portal gas is detected by US, the possibility of cholangitis should be included in the differential diagnosis.
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan. TBE01241@nifty.com.
Hitoshi
H
Yagisawa
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Hideaki
H
Ishida
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Tomoya
T
Komatsuda
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Kayoko
K
Furukawa
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Mamiko
M
Yamada
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Hideo
H
Ohno
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Toru
T
Ishii
Center of Diagnostic Ultrasound, Akita Red Cross Hospital, 222-1 Saruta Kamikitade, Akita, 010-1495, Japan.
Takako
T
Watanabe
Department of Radiology, Akita Red Cross Hospital, Akita, Japan.
Takaharu
T
Miyauchi
Doppler method; cholangitis; portal gas; portal vein; ultrasonography