No abstract

Blue nevi may rarely appear in multiple form and grouped in a circumscribed area, a pattern of arrangement that is more properly designed under the term agminated blue nevi. In this paper a new case with light and ultrastructural studies is described, and the previously reported cases are reviewed. Histologically, there was a characteristic perifollicular arrangement of dermal melanocytes, most of which showed ultrastructurally an extracellular sheath. Agminated blue nevi seem to be benign lesions, but because of their rarity, no definite prognosis can be given.

The occurrence of transverse linear milia cysts over the dorsum of the nose in an 11-year-old girl is described. Two younger sisters of the proband had a conspicuous nasal groove at the same site without milia. The anatomical basis and the pathogenesis of the so-called 'transverse nasal crease' are reviewed.

Arteriovenous malformations (AVM) are vascular anomalies containing a communication between an artery and a vein without an intervening capillary bed. In 1990, Klippel and Trenaunay reported a patient with limb overgrowth, cutaneous angiomata and varicose veins. In 1918, Parkes Weber mentioned the additional feature of AVM terming the condition 'hemangiectatic hypertrophy'. Most authors now consider both the Klippel-Trenaunay syndrome and the syndrome of multiple congenital arteriovenous fistulae to be two forms of Parkes Weber's hemangiectatic hypertrophy. Clinical and histological 'Kaposi sarcoma'-like lesions in the Klippel-Trenauny-Weber syndrome are well documented. We report an additional case appearing after minor trauma.

No abstract