Hepatic hydatid disease (hepatic echinococcosis) is a zoonotic infection caused by the larval stage of Echinococcus granulosus or E. multilocularis. Its presentation is dictated by cyst number, size, location, integrity, and associated complications. Many patients remain asymptomatic for years; symptoms emerge only when growing cysts exert a mass effect, rupture, or become secondarily infected. Pain and right-upper-quadrant discomfortA constant dull ache or sensation of fullness develops beneath the costal margin as the cyst expands or stretches Glisson’s capsule; sudden sharp pain heralds cyst rupture or intracystic haemorrhage. Palpable hepatic massInspection reveals asymmetric abdominal bulging; palpation detects a smooth, resilient, ballotable... Learn more