PathWays Case Study: Nov. 29

By apriljosselyn • November 29, 2016

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A 51-year-old woman presented with two rounded right upper-lobe lung nodules, measuring 3.0 cm and 0.2 cm in greatest dimension. She underwent wedge resection of the masses. Histologic sections revealed the tumor was composed of two cell populations. All neoplastic cells stained positively with TTF-1 and epithelial membrane antigen (EMA) immunohistochemistry, while the lining cells also stained positively with pan-cytokeratin.

Melanie Bois, M.D.
Fellow, Cardiovascular Pathology
Mayo Clinic
Follow her on Twitter: @MelanieBoisMD

apriljosselyn

April Josselyn is a Marketing Channel Manager at Mayo Clinic Laboratories. She has worked at Mayo Clinic since 2012. Outside of work, April enjoys the outdoors and being "hockey mom" for her two sports-crazed boys.