Clear Cell Carcinoma of Ovary (40X) (Hobnail cell)
Clear Cell Carcinoma of Ovary (40X) (Hobnail cell)

The arrow points to an example of a hob-nail cell.
This cell is a feature of clear cell carcinoma.
The nucleus, instead of being basal, appears to stand on a narrow stalk of cytoplasm resembling a large headed hobnail.
The nucleus hangs into the lumen.
(Description By:Melinda Sanders, M.D. )
(Image Contrib. by:Melinda Sanders, M.D. UCHC )