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Case of the Month

This program offers one challenging case each month from the CAP Performance Improvement Program in Surgical Pathology. For each case, you will use a virtual microscope whole slide image of a surgical specimen to diagnose diseases.

You will be presented with information on each case including: specimen source, clinical history, laboratory findings, and a representative whole slide image of the surgical specimen. After you complete each case, you will receive a case summary with three multiple-choice questions that relate to the case.

Please note: DigitalScope® is supported with Microsoft Internet Explorer 11.0 (limited support for IE 9 and 10) or later, or FireFox 4.0 or later, or Safari 3 or the latest Google Chrome version.


A 55-year-old woman with a history of lung carcinoma presents with a 13 cm breast mass. Grossly, the mass has a spongy hemorrhagic appearance with ill-defined borders. Histologically the tumor is composed of epithelioid cells admixed with hemorrhage. The tumor cells are positive for pan-cytokeratin, EMA, CD31, and ERG.

Read the Case of the Month

Previous Cases of the Month

View a list of previous cases using the virtual microscope to examine various surgical specimens and diagnose diseases.

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