Segmental porokeratosis developing after electron beam radiotherapy for follicular lymphoma has been reported once, to our knowledge, in the literature.1 However, the patient in that case could not recall which areas of skin were irradiated, so the association was open to question. We report a second case, which we think demonstrates the association even more convincingly.
Batchelor JM, Fife K, Burrows NP. Localized Porokeratosis Secondary to Ionizing Radiotherapy for Prostate Carcinoma. Arch Dermatol. 2010;146(11):1318-1320. doi:10.1001/archdermatol.2010.334