HAMARTOMA MONILIFORMIS

Hamartoma moniliformis (HM) (Latin: monile —necklace), also known as linear papular ectodermal-mesodermal hamartoma, consists of a benign, permanent, linear, flesh coloured papular eruption on the head, neck and upper chest. It is asymptomatic and occurs most commonly in negroes, after puberty.

These lesions are completely benign and have been called linear mesodermal ectodermal dysplasia.

This author notes a striking similarity of HM with the facial papules of frontal fibrosing alopecia.

Clinical

Innumerable, tiny uniform papules may be seen symmetrically on the forehead and temples in hamartoma moniliformis.

Histologic examination shows among other changes, striking are pilosebaceous follicles showing large sebaceous glands, lanugotype hairs, and perifollicular fibrosis.

Treatment

No treatment is needed.

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