Joseph C. Pierson, MD

Article

Atretic Cephalocele With Hypertrichosis

Author:: Joseph C. Pierson, MD

Publish date: July 23, 2020

Atretic cephalocele is a rare diagnosis occurring on the scalp as a nodule with an overlying hair tuft or alopecia with or without a hair collar.

Article

Sunburn Purpura

Author:: Joseph C. Pierson, MD

Publish date: October 24, 2017

To the Editor: Chronic UV exposure has been linked to increased skin fragility and the development of purpuric lesions, a benign condition known as...

Quiz

Firm Gray Nodule on the Scalp

Author:: Joseph C. Pierson, MD

Publish date: June 2, 2016

A 78-year-old woman presented with a firm lump on the posterior vertex of the scalp of more than 1 year’s duration. She denied pain, bleeding, disc...

Quiz

Toe Nodule Obliterating the Nail Bed

Author:: Joseph C. Pierson, MD

Publish date: April 14, 2016

A generally healthy 30-year-old man presented with a 3-cm exophytic, yellowish red, subungual nodule of the left great toe of 1 year’s duration tha...