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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 AD 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?

Figure A

Figure A

Figure B

Figure B

Figure C

Figure C

Figure D

Figure D

Acknowledgements: This case and images were kindly provided by the Mayo Clinic, Rochester, MN.

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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.

 
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