Saphenous neuropathy due to large hydatid cyst within long adductor muscle: case report and literature review

Abstract

An unusual case of saphenous neuropathy secondary to compression by a large hydatid cyst within the adductor longus muscle is reported. Solitary hydatid cyst(s) localized in the skeletal muscles occur rarely and often mimic soft tissue tumours. Presentation with signs of peripheral nerve compression by a hydatid cyst in an extremity is exceedingly rare. Diagnosis can be established by ultrasound, computerized tomography or magnetic resonance if clinically suspected. Clinical suspicion of hydatid origin of a solitary muscle cyst should be high especially in patients hailing from areas endemic for echinococcosis. Laboratory tests are usually unhelpful in such cases and needle biopsy carries the risk of anaphylactic shock and should therefore be avoided. Surgical removal of the unruptured cyst is the treatment of choice in cases of intramuscular hydatid cyst. In the present case, excision of the hydatid cyst was followed by complete clinical recovery. In the absence of systemic involvement, treatment with albendazole may be avoided.

An Uncommon Cause of Soft Tissue Mass of the Extremities, Report of 2 Cases and Review of Literature of Cystic Echinococcosis

“…The two cases are special because of the isolated musculoskeletal affection. In literature a solitary occurrence in bone is reported in 0,5-4% and in soft tissue only in 0,2-2,2% of cases [1,[12][13][14].Osseous hydatid disease mostly occurs in the spine (35%-60%) and the pelvis (14%-21%) followed by the femur (16%-19%). Tibia, humerus and ribs are rarely affected [5,7,15].…”

What did we learn from “isolated subcutaneous hydatid cysts” about the transmission ways of Echinococcus granulosus?

“…Although this pathway could indicate direct transmission of cystic echinococcosis, the role of lactic acid still remains controversial, since its toxicity may, in contrast to that theory, prevent fixation of the larvae, especially when coupled with muscular contractions [4].…”

An unusual cause of circulatory disorder due to a rare intermuscular hydatid cyst of cruris: A case report

“…As demonstrated in our case, the proximity of HC to the skin and the application of needle aspiration by an experienced radiologist under USG control could minimize the risk of contamination and the development of anaphylaxis. The application of wide surgical excision following a 4-week follow-up with additional albendazole treatment may eliminate the risk of recurrence and anaphylaxis [30] . It may also enable histopathological inspection for earlier diagnosis.…”