24 November 2020: Images of the Week

Here are just a few of this week’s new images from our free, online textbook:

Bladder cytology -nonneoplastic

Degenerated infected cell with vesicular nucleus showing spider web chromatin (bladder washing, ThinPrep, 60x).

Written by Gong Feng, M.D., Ph.D.Bonnie Choy, M.D.

Metanephric adenofibroma

H&E image showing the epithelial component (bottom) and the stromal component (top).

Written by Rose Chami, M.D.

Trichoepithelioma / trichoblastoma

Cheek biopsy: trichoepithelioma with prominent keratin cyst formation. Note the bland cytologic features, cellular stroma and lack of epithelial stromal clefting (H&E, 100x magnification).

Written by Eleanor Russell-Goldman, M.D., Ph.D.


Strong, diffuse nuclear expression of PAX8 in metastatic renal cell carcinoma involving the lung on needle core biopsy.

Written by Kelsey E. McHugh, M.D.

Thyroid gland cytology → Bethesda system, malignant

Papillary thyroid carcinoma, thyroid FNA: intranuclear cytoplasmic inclusion (arrow) and powdery chromatin (Papanicolaou, 40x).

Written by Ayana Suzuki, C.T.Andrey Bychkov, 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 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.