IgG4-related Sclerosing disease: a potential new etiology of cutaneous pseudolymphoma.

IgG4-related sclerosing disease is a syndrome characterized by the involvement of a wide variety of tissues by lymphoplasmacytic infiltrates and sclerosis, elevated serum IgG4 titer, and increased IgG4+ plasma cells in tissues. This report describes 2 cases with skin involvement, a feature not well documented in the literature. The patients had plaques or nodules in the skin of the cheek, temporal or periauricular region.

A retrospective study of 2585 patients patch tested with the European standard series in Hong Kong (1995-99).

Background: Data on patch test findings in Hong Kong are scarce, with the last survey performed more than 10 years ago. A retrospective analysis of results from all patch tests performed on patients with suspected allergic contact dermatitis from January 1995 to December 1999 in the Social Hygiene Service, which provides a public dermatology service in Hong Kong, was undertaken. We aimed to explore the demographic data associated with positive reactions and the profile of contact sensitizing allergens in Hong Kong.

Cutaneous and pulmonary sarcoidosis in a Hong Kong Chinese woman with silicone breast prostheses.

Sarcoidosis is rarely reported in Hong Kong. We report cutaneous and pulmonary sarcoidosis in a 54-year-old Chinese woman, who presented with papular lesions over the face and neck. She had silicone breast augmentation surgery 4 years earlier.

A prospective epidemiologic survey on the prevalence of foot disease in Hong Kong.

A prospective epidemiologic survey on the prevalence of foot disease in Hong Kong found foot disease in 64% of patients screened. All of the patients were ethnically Chinese. Of the conditions specified in the questionnaire, fungal foot infection, tinea pedis, and toenail onychomycosis were the most frequently encountered conditions, followed by metatarsal corns, eczema, psoriasis, and pes planus.

Perianal ulceration in a "healthy" Chinese man with disseminated tuberculosis.

Orificial tuberculosis (OTB) is a rare form of cutaneous Mycobacterium tuberculosis infection affecting the mucosa and skin around orifices in patients with advanced internal tuberculosis and poor general health. We report a 72-year-old Chinese man who had a 10-year history of OTB with disseminated tuberculosis infection of the lungs and urinary tract. He appeared surprisingly healthy and had been free from systemic symptoms all along despite widespread tuberculosis.