Primary hydatid cyst of the gallbladder: an unusual localization diagnosed by Magnetic Resonance Imaging (MRI)

Abstract

Hydatid disease is endemic in Tunisia and has been considered as one of the most common surgical pathology. Several localizations have been described, but hydatidosis of the liver is the most frequent clinical entity. Primary hydatid cyst of the gallbladder is very rare. We report in this observation a new case of primary hydatid cyst of the gallbladder diagnosed by Magnetic Resonance Imaging (MRI).

Primary hydatid cyst of gallbladder: A case report

“…Cattles (sheep, goat, dogs) are primary (definitive, sexual cycle) host. Human beings are secondary dead end (asexual cycle) host [1][2][3][4][5]. Human infection is caused by fecal-oral route or ingestion of contaminated vegetables or meat [1][2][3][4][5][6][7][8][9].…”

“…Other organs are involved secondary to pulmonary or hepatic involvement. Among the unusual primary sites, in order of frequency, central nervous system (4-5%), musculoskeletal system (0.5-4%) and cardiovascular system (0.5-2%) are involved [2,5,6,9].…”

“…The incidence of primary extrahepatic intra abdominal hydatid cyst is 6.5% [1][2][3][4][5][6][7][8][9]. Spleen (2-3%) is the predominant organ involved [1,[3][4][5].…”

“…Gallbladder is primarily involved in 0.6%. GB cysts may be located intraluminally or on the surface [1][2][3][4][5][6][7][8][9]. As a rule luminal cysts are single and parietal cysts are multiple containing daughter cyst [2,5].…”

“…In India, Jammu and Kashmir is an endemic region though reports of hydatid disease has been reported from almost whole of the Indian subcontinent [1]. Liver (75%) and lungs (15%) are common sites of infection in humans [1,2]. Primary extrahepatic intra-abdominal hydatid cyst is a rare clinical entity.…”