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hydatid cyst; echinococcal cyst
A cyst formed in tissues of intermediate hosts of Echinococcus.
Etiology:
- echinococcosis
Clinical manifestations:
- majority of cases are asymptomatic
- swelling without warmth or tenderness
- symptoms related to infection of a cyst occur in ~25% of patients
Laboratory:
- serology: serum Echinococcus antibody
Radiology:
- magnetic resonance imaging (case report) with images [2]
- cyst with daughter cysts [2]
Complications:
- rupture into the biliary tree, obstruction, fibrosis, & enterocutaneous fistula
- rupture with leakage into the peritoneum & subsequent anaphylaxis
Management:
- see echinococcosis
- cystectomy
Related
echinococcosis (hydatid disease)
Echinococcus
Specific
ruptured hydatid cyst
General
cyst
References
- Murali MR, Uyeda JW, Tingpej B.
Case records of the Massachusetts General Hospital. Case 2-2015.
A 25-year-old man with abdominal pain, syncope, and hypotension.
N Engl J Med. 2015 Jan 15;372(3):265-73
PMID: 25587951
http://www.nejm.org/doi/full/10.1056/NEJMcpc1410939
- Akhtar N, Kumar V
Images in Clinical Medicien. Echinococcal Cysts in the Leg.
N Engl J Med 2020; 383:2665> Dec 31
PMID: 33382933
https://www.nejm.org/doi/full/10.1056/NEJMicm2022686