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.


How can you search the textbook?

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.

For mobile, visit PathologyOutlines.com, click on “Chapters by Subspecialty” (as demonstrated below) and then click on the subspecialty, chapter and topic.

For any device you can use your favorite browser and type in PathologyOutlines.com in addition to the search term.

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