† A 41-year-old woman had multiple keratotic papules and nodules on the trunk and extremities four years after a bowel-bypass procedure for morbid obesity. The microscopic features were those of a perforating folliculitis. Serum vitamin A levels were extremely low. Oral vitamin A therapy resulted in dramatic improvement of the cutaneous lesions.
(Arch Dermatol 1984;120:919-921)
Barr DJ, Riley RJ, Greco DJ. Bypass PhrynodermaVitamin A Deficiency Associated With Bowel-Bypass Surgery. Arch Dermatol. 1984;120(7):919-921. doi:10.1001/archderm.1984.01650430105019