M 39, scalp nodule, 3 cm
- Sex: mostly female. Location: mostly scalp.
- Slow-growing, sometimes painful solitary pink or red dermal nodule averaging 1 cm in size.
- Familial cases are associated with multiple tumors.
- Such cases may also be associated with facial trichoepitheliomas, and eccrine
spiradenomas, called autosomal dominant Brooke-Spiegler syndrome (familial
cylindromatosis or turban tumor syndrome).
-Presence of numerous scalp lesions is called ‘turban tumor’.
-Non-encapsulated dermal tumor not connected to the
-Composed of numerous lobules of epithelial cells arranged in a jigsaw
or mosaic pattern.
-Prominent red basement membrane-like structure encircles the
-Each lobule shows a peripheral lining by dark basaloid cells and an inner
larger and paler zone of cells.
-Nodular deposits of red material within the lobules as well as focal
-This is a common adnexal tumor of eccrine origin.
Deba P Sarma, MD, Omaha