16 December 2020: Micro Images of the Week

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


Expanded terminal duct lobular unit and adjacent (upper left) normal size terminal duct lobular unit (H&E, 4X).

Contributed by Julie M. Jorns, M.D.

Congenital mesoblastic nephroma

Tumor composed of intersecting fascicles of spindle cells.

Contributed by Ellen D’Hooghe, M.D. and Gordan M. Vujanic, M.D., Ph.D.

Large B cell lymphomas: ALK+ LBCL

ALK positive large B cell lymphoma with ALK positivity (bone marrow, IHC, 200x).

Contributed by Marie Therese Manipadam, M.B.B.S., M.D.

Molecular aspects of pancreatic cancer

Site: pancreatic head. Procedure: Whipple resection. Diagnosis: medullary pancreatic ductal adenocarcinoma. Histologic finding: neoplastic cells with syncytial growth and without gland formation (hematoxylin eosin, original magnification 10x). Molecular findings: microsatellite instability is very common in the case of medullary histology.

Contributed by Claudio Luchini, M.D., Ph.D.

Chronic sialadenitis / sialolithiasis

40 year old man with submandibular pain; chronic inflammation with acinar atrophy and fibrosis (10x).

Contributed by James S. Lewis, M.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 61 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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