Biomedical subjects
Publications and source records attributed to A G Knight.
The case of an 80-year-old woman who developed extensive cutaneous calcification following intravenous phosphate administration is presented. Also the circumstances under which cutaneous calcification may occur are discussed.
A case of cutaneous cryptococcosis is described in an immunocompromised patient. The initial lesion developed on the dorsum of the hand following trauma and was initially thought to be neoplastic. Satellite subcutaneous lesions developed in a 'sporotrichoid' pattern along the forearm. Treatment with oral fluconazole resulted in the complete resolution of the lesions. This is the first published report of the use of fluconazole in the treatment of cutaneous cryptococcosis.
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Four patients are described who developed granulomatous reactions in the red portions of their tattoos. Histopathological and immunofluorescence studies showed features of lichen planus. Mercury was identified in only one patient's lesion, and hypersensitivity to mercury was shown by patch testing in one other patient. Tattooing may provide a localised antigenic challenge resulting in spontaneously occurring lichen planus.
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Seventy patients with rosacea were treated with systemic tetracycline for 6 months. Sixty-eight of them cleared with treatment. After withdrawal of the drug seventeen relapsed immediately and the overall relapse rate over 4 years was 69%. The serum tetracycline levels were not significantly different in two patients who failed to respond. Six patients had rosacea keratitis and responded dramatically within 1 month. Symptoms recurred as the drug was withdrawn. It is suggested that rosacea patients with keratitis should receive early and prolonged tetracycline medication.
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