5 May 2021: Pathology Images of the Week

Here is a selection of new images from our free, online textbook:

Bone & joints > Chondrosarcoma (primary, secondary, periosteal)

There is obvious nuclear atypia and pleomorphism but the background is distinctly chondroid.

Contributed by Shadi Qasem, M.D.

Bone marrow neoplastic > Myeloid / lymphoid neoplasms with eosinophilia and gene rearrangement > PCM1-JAK2

Bone marrow clot showing large, abnormal aggregate of early erythroid precursors. Also note dysplastic megakaryocytes (H&E stain, 200x).

Contributed by Zeba N. Singh, M.B.B.S., M.D.

Lymphoma & related disorders > Indolent T lymphoproliferative disease of the GI tract

Majority of T cells in the infiltrate are CD8 positive.

Contributed by Anamarija M. Perry, M.D.

Uterus > Leiomyoma-general > FH deficient leiomyoma

Spindle or epithelioid cells with ovoid nuclei and prominent eosinophilic nucleoli surrounded by perinucleolar halos.

Contributed by Sabrina Croce, M.D., Ph.D.

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For desktop / tablet, you can either use the Google search bar in the upper right corner or visit PathologyOutlines.com and then scroll down to where the 59 chapters are listed, as demonstrated below.

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