Fibular hydatid cyst

Complicated Hydatid Cyst of Ulna- A Rare Case Report

Although hydatidosis is not uncommon in tropical countries, still bony involvement is comparatively rare. The aetiological agent is Echinococcus granulosus, a parasite belonging to cestode group with dog as definitive host and man as incidental host. We present a case of young male, who consulted us for painless, multiple swellings in his right forearm of three years duration, with restricted wrist movements. On examination multiple non tender, soft to firm swellings were noted with restricted terminal pronation. X-rays and MRI of right forearm showed multiple lobulated soft tissue components in intermuscular, subcutaneous and cutaneous planes and the main ulnar intramedullary cystic mass extending out as extramedullary cyst through proximal ulnar cortical breach. Proximal 2/3rd radius were also affected. On surgical exploration of forearm, cystic swelling measuring 8 × 6 × 5 cm sprouting out from proximal ulnar erosion was found. Intraoperative histopathology showed multiple endocysts suggestive of hydatid cyst; hence with protective measures wound closed back in layers and six weeks of oral albendazole 400 mg daily was given. At six weeks follow-up wrist movements improved but serous discharge persisted at drain site. Patient is still under regular follow-up. Thus, a differential diagnosis of bony hydatidosis should be considered while evaluating soft tissue swellings.

Unusual locations of the hydatid cyst: a review from iran

Hydatid disease is caused by Echinococcus granulosus and is endemic in many parts of the world, including Iran. This parasitic tapeworm can produce cysts in almost every organ of the body, with the liver and lung being the most frequently targeted organs. However, the cyst tends to appear in different and sometimes unusual body sites in various geographical areas of the world. This review provides information on the reported cases of the unusual body sites of the hydatid cyst from Iran in the last 20 years. A literature search was performed through PubMed, Scopus, Google Scholar, IranMedex, Society Information Display (SID), Magiran, and Irandoc using the keywords of "hydatid cyst and Iran" and "Echinococcus granulosus and Iran", and 463 published cases of the hydatid cyst in unusual body sites from Iran were reviewed, evaluated, and discussed. The most common locations were the central nervous system (brain, spinal cord, and orbit), musculoskeletal system, heart, and kidney, while some less common locations were the spleen, pancreas, appendix, thyroid, salivary gland, adrenal gland, breast, and ovary.