Railway track-like dermatitis: an atypical Mondor's disease?

The cases of two patients with linear, cordlike lesions on the anterolateral chest wall are reported. Both cases suggested a clinical diagnosis of Mondor's disease (i.e., sclerosing periphlebitis of the chest wall) with atypical aspects. The histologic picture showed a diffuse dermal infiltrate, predominantly of eosinophils mixed with lymphocytes and histiocytes, with some evidence of collagen degeneration. No flame figures were seen. Problems of differential diagnosis are discussed.

Unilateral linear basal cell nevus associated with diffuse osteoma cutis, unilateral anodontia, and abnormal bone mineralization.

A case of unilateral linear basal cell nevus, diffuse osteoma cutis, unilateral anodontia, and abnormal bone mineralization is reported. Unlike the anodontia, the unilateral linear basal cell nevus and osteoma cutis began to appear in adulthood. A hamartomatous process is suggested to explain these conditions. This complex syndrome has not been reported in the literature.

Hair shafts in epidermoid cysts.

17 cases of epidermoid cysts with vellus hairs in their lumen are reported. The clinical diagnosis was usually cysts. In 12 cases the lesions were solitary and in 5 they were multiple, small and closely set. Microscopically, the findings of the wall were those of the epidermoid cyst containing in their lumen hair shafts of lanugo size. The solitary variety of these cysts can be considered as the solitary counterpart of the eruptive vellus hair cyst. Problems of differential diagnosis are discussed.