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Published on: July 29, 2013
Subcutaneous sparganosis mimicking soft tissue tumor: a case report
Jung-Mo Hwang1, Deuk-Soo Hwang1, Chan Kang1
1Department of Orthopaedic Surgery, Chungnam National University Hospital, Daejeon, South Korea, dshwang@cnu.ac.kr.
Sparganosis, a rare parasitic infection by Spirometra tapeworm larvae, can affect various tissues. This case highlights a thigh infection misdiagnosed as a tumor, emphasizing the need for physician awareness.
Area of Science:
- Parasitology
- Infectious Diseases
- Medical Case Reports
Background:
- Sparganosis is a rare human parasitic infection caused by Spirometra tapeworm larvae (spargana).
- While typically affecting subcutaneous tissue, Spirometra can invade any body tissue.
- Limited physician experience with sparganosis necessitates increased diagnostic awareness.
Observation:
- A 33-year-old woman presented with a six-month history of a migrating, painful thigh swelling and erythema.
- Initial diagnosis was a soft tissue tumor, but MRI revealed elongated tubular tracts.
- Surgical removal of a long, wrinkled, whitish worm was performed.
Findings:
- Histopathological analysis identified the parasite as Spirometra mansoni.
- The case demonstrates an unusual presentation of sparganosis in the thigh musculature.
- The worm's migratory nature and initial misdiagnosis underscore diagnostic challenges.
Implications:
- Sparganosis should be considered in the differential diagnosis for unexplained migrating swellings.
- Special serological tests are recommended for suspected cases prior to surgical intervention.
- Increased awareness and diagnostic preparedness are crucial for managing rare parasitic infections like sparganosis.
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