Simple hyperplasia-hypertrophy and hypersecretion of the sebaceous and sweat glands in a circumscribed area of skin do not appear to have been mentioned in any published account of nevi and adenomas of the sebaceous or sweat glands.
Woolhandler and Becker1 have clearly divided the sebaceous gland overgrowths into the following categories:
Adenoma sebaceum (Balzer)
Adenoma sebaceum (Pringle)
Acquired (senile) adenoma sebaceum
Keratotic adenoma sebaceum
Sebaceous gland adenoma
Nevus pigmentosus et sebaceus
Whatever this nomenclature may leave to be desired, the categories themselves are reasonably clearcut, and the case to be reported here does not correspond to any of them. These authors did suggest that hyperplasia of sweat glands may on rare occasions be associated with nevus sebaceus; but in that lesion the sebaceous glands are so large and numerous as to form yellowish papules or masses, and the basal layer of the sebaceous acini is
Arnold HL. NEVUS SEBORRHEICUS ET SUDORIFERUS: A UNILATERAL LINEAR PHYSIOLOGIC ANOMALY. Arch Derm Syphilol. 1945;51(6):370–372. doi:10.1001/archderm.1945.01510240016003
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