Summary

We present a rare case of simultaneous occurrence of mucinous cystadenoma of the liver (MCN-L) and a hepatic hydatid cyst (HD-L) in a middle-aged female patient. This is the first case report of a common disease (HD-L) and a rare condition (MCN-H) occurring concurrently. MCN-H of the left lobe was inadequately resected in a rural centre leading to recurrence. She presented with a large upper abdominal lump and upper gastrointestinal symptoms. Radiological investigations and an ultrasound revealed a multilobulated cyst involving both lobes of the liver. There was no ascites. Liver function, basic haematology and renal function were normal. The recurrent MCN-L was removed totally. There was no communication between the MCN-L and the right lobe cyst, which turned out to be a hydatid cyst. The hydatid cyst was evacuated. She was discharged on albendazole and is asymptomatic with no recurrence at 8 months.