Can a parasite be seen as a lesion on the liver? upper belly swelling an sick, severe fatigue so tired other than cancer what's the cause? .

Yes: CT scanning will show multiple liver cysts. ... Pathophysiology: these are caused by infestation with the parasite Echinococcus granulosus ... (for up to 10-20 years) or can present with pain and large right upper quadrant mass. If a cystic lesion is noted and biopsy proves echinococcal in orgin treatment should be initiated by a hepatologist or infectious disease specialist.