Monthy Case Studies - 2012
Case #333 - October, 2012
A 68-year-old woman underwent a routine screening mammogram, which revealed calcifications in the right breast. Biopsy specimens were collected and sent to Pathology for histological work-up. Figures A–D show what was observed at 20x, 100x, 200x, and 400x magnification respectively by the attending pathologist on one of the slides stained with hematoxylin and eosin (H&E). What is your diagnosis? Based on what criteria?
Acknowledgements: This case and images were kindly provided by the Mayo Clinic, Rochester, MN.
Answer to Case #333
This was a case of sparganosis caused by the third-stage plerocercoid larva (sparganum) of a cestode in the genus, Spirometra. Diagnostic features include:
- a thick tegument.
- presence of calcareous corpuscles.
- absence of defined protoscoleces.
More on: Sparganosis
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Images presented in the monthly case studies are from specimens submitted for diagnosis or archiving. On rare occasions, clinical histories given may be partly fictitious.