December, 2006

Case 193:
A 45-year-old woman had a nodule approximately 1 cm in diameter located near a scar from a previous mastectomy.  The patient had traveled to several western and central European countries within the past year.  The nodule was removed and tissue sections were stained with hematoxylin and eosin (H & E).  Figures A-D show what was seen in the tissue sections.  Figure A was taken at 50×, B at 100×, and Figures C and D at 400× magnification respectively.  What is your diagnosis?  Based on what criteria?

A	B

C	D

Acknowledgement: This case and images were kindly contributed by Dr. Truus Derks.

Click here for the answer to Case 193.

Case 194:
Images from a trichrome stained fecal smear were submitted to DPDx telediagnosis assistance from a public health laboratory.  Parasites were suspected and further confirmation was needed.  The patient was a 32-year-old male who had diarrhea; no travel history was known.  The objects in Figures A-D were present in  moderately high numbers; images were taken at 1000× magnification.  What is your diagnosis?  Based on what criteria?

A	B

C	D

Click here for the answer to Case 194.

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.