Presentation
Abdominal distention and pain.
Patient Data
Age: 50 years
Gender: Male
From the case:
Frimann-Dahl sign of sigmoid volvulus
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Coffee bean appearance with three dense lines converging towards the site of obstruction (Frimann-Dahl sign), which supports the diagnosis of sigmoid volvulus.
From the case:
Frimann-Dahl sign of sigmoid volvulus
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- star = site of obstruction
- red arrows = converging lines representing sigmoid colon walls
Case Discussion
Frimann-Dahl sign: three linear shadows converging to the site of obstruction - a radiographic sign of sigmoid volvulus.
A case of Professor Saeed Rad, Tabriz, Iran.