Case 67
A 67-year-old woman visited her health care provider because of a subcutaneous nodule located in the posterior area of her right shoulder.  The cyst was surgically removed.  It measured three to four centimeters in diameter and was filled with clear fluid.  The material was submitted for histological examination.  Sections were made and stained with H & E (hematoxylin and eosin).  Figure A shows a large area of the stained section captured using 50× magnification (5× objective) from one slide, and Figures B and C show cropped areas using 200× magnification (20× objective).  What is your diagnosis?  Based on what criteria?

A

B	C

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Case 68
An adult man passed a segmented worm and submitted it to his local state health department for identification.  The worm was placed in 10% formalin and sent to CDC (Figure A).  In addition to gross examination, a segment was removed from the distal end and compressed between two glass slides, producing the objects shown in Figure B.  What is your diagnosis?  Based on what criteria?

A	B

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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.