Here is a selection of new images from our free, online textbook:
Lymphoma & related disorders > Aggressive NK cell leukemia
Trephine bone marrow biopsy showing an interstitial neoplastic infiltrate at high power, with moderate cytoplasm, irregular nuclear contours and prominent nucleoli.
Contributed by Siba El Hussein, M.D. and Joseph Khoury, M.D.
Soft tissue > Myxoinflammatory fibroblastic sarcoma
Low power magnification shows a lobulated soft tissue tumor with mixed fibrous and myxoid areas located within subcutaneous tissue.
Contributed by David Suster, M.D.
Stains & molecular markers > DUX4
CIC-DUX4 fusion tumor (DUX4, 10x), involving soft tissue of flank.
Contributed by Bradford Siegele, M.D., J.D.
Skin nontumor > Atrophic papulosis
Superficial and deep perivascular and periadnexal lymphocytic infiltrate (H&E, 40x).
Contributed by Kiran Motaparthi, M.D.
Bone & joints > Ganglion
Myxoid changes (gray-blue areas) are visible in the ganglion wall on the right. The remaining wall is composed of dense pink collagenous stroma. The lining of the wall does not show epithelial cells.
Contributed by Serenella Serinelli, M.D., Ph.D.
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