1. Extragenital Adenomatoid Tumor of a Mediastinal Lymph Node
Phillip A. Isotalo, MD, FRCPC, Antonio G. Nascimento, MD, Victor F. Trastek, MD, Lester E. Wold, MD, John C. Cheville, MD 
Mayo Clinic Proceedings 
Volume 78, Issue 3, Pages (March 2003)
DOI: /
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2. Figure 1
Nodal adenomatoid tumor. Left, Pseudoacini and anastomosing channels lined by epithelioid cells and flattened cells characterize the tumor (hematoxylin-eosin, original magnification x100). Right, Solid foci of epithelioid cells and intervening fibrous tissue are also observed (hematoxylin-eosin, original magnification x200).
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3. Figure 2
Epithelioid cells and flattened cells of the nodal adenomatoid tumor exhibit strong calretinin immunoreactivity (calretinin, original magnification x200).
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4. Figure 3
Electron microscopy of the nodal adenomatoid tumor shows epithelioid cells with prominent microvilli, perinuclear intermediate filaments, and desmosomes (osmium tetroxide, original magnification x12,600).
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