Co-occurrence of steatocystoma multiplex, eruptive vellus hair cysts, and trichofolliculomas

An association between steatocystoma multiplex (SCM) and eruptive vellus hair cysts (EVHCs) has been recognized. Steatocystoma multiplex and EVHC have similar clinical features but distinctive histologic features. Rare cases of co-occurrence of these conditions have been known to occur on the trunk and the forehead. We report a rare case of the simultaneous occurrence of SCM, EVHC, and trichofolliculomas localized to the forehead.

Localized pretibial pemphigoid associated with trichilemmal carcinoma

We report a case of localized pretibial pemphigoid with concurrent trichilemmal carcinoma of the face in a 93-year-old women. Immunoblot analysis showed circulating autoantibodies against the 230 kDa antigen. After removal of the skin tumor, the bullous skin lesions were reduced and healed with only the topical application of corticosteroid.

Simultaneous occurrence of multiple trichoblastomas and steatocystoma multiplex

We present a 55-year old man who, since age 21, progressively developed multiple papules and nodules on the face and upper trunk. Light microscopic examination of some of the neoplasms showed trichoblastomas, while others had histopathological features of trichoepithelioma and steatocystoma. Simultaneous occurrence of multiple trichoblastomas/trichoepitheliomas and steatocystomas, not reported previously, could represent multiple neoplasms involving differentiation toward different components of the folliculosebaceous unit.

A Scottish family with Bazex-Dupré-Christol syndrome: follicular atrophoderma, congenital hypotrichosis, and basal cell carcinoma

Bazex-Dupre-Christol syndrome (BDCS) is an X linked dominant disorder of the hair follicle characterised by follicular atrophoderma, multiple basal cell carcinomas, hypotrichosis, milia, and localised hypohidrosis. Follicular atrophoderma (FA) are follicular funnel shaped depressions, "ice pick marks", seen most commonly on the dorsum of the hands. We describe the first known Scottish family with this syndrome, five affected members spanning three generations. They have hypohidrosis confined to the face, coarse hair, dry skin, milia, and follicular atrophoderma. All the adults have a history of multiple basal cell carcinomas. None of them has any skeletal feature suggestive of Gorlin's syndrome. The clinical features, skin histology, and scanning electron microscopic (SEM) examination of the hair are described and illustrated. The features are compared with 15 previous reports of BDCS and four reports in which this is a possible diagnosis are also reviewed. BDCS should be considered as a differential diagnosis in patients with early onset or familial basal cell carcinomas.

Seborrheic keratosis with trichilemmomas masquerading as melanoma

Seborrheic keratoses are benign lesions and, generally, are easily diagnosed based on clinical criteria. However, several types of benign as well as malignant lesions have been found associated with seborrheic keratoses, thus confusing the clinical picture. Presented is the first reported case of trichilemmomas occurring within seborrheic keratosis and masquerading as melanoma with regression. Biopsy of unusual seborrheic keratoses is recommended.

Multiple trichoepitheliomas with rare features

A case of multiple trichoepitheliomas associated with epidermal cysts is reported. The trichoepithelioma lesions were florid and extensive with large nodulo-cystic lesions on the face and a new variant simulating hidradenitis suppurativa near the gluteal cleft.