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Subcutaneous sarcoidosis--clinicopathological study of 10 cases.
British Journal of Dermatology 2005 October
BACKGROUND: Subcutaneous sarcoidosis is a specific cutaneous lesion of sarcoidosis that is rarely reported.
OBJECTIVE: Our purpose was to analyse the clinicopathological features of 10 patients with subcutaneous sarcoidosis and its relationship with the systemic features of the disease.
PATIENTS AND METHODS: The patients with systemic sarcoidosis, diagnosed from 1974 to 2002 at a university hospital in Barcelona, Spain, who developed subcutaneous involvement, were included in the study. The diagnosis of systemic sarcoidosis was made according to conventional criteria. All the patients were monitored prospectively at the sarcoidosis clinic of the hospital. Skin biopsies were performed when granulomatous cutaneous involvement was suspected clinically.
RESULTS: Granulomatous cutaneous involvement was demonstrated in 85 of 480 patients with systemic sarcoidosis. In 10 of these 85 patients subcutaneous sarcoidosis was diagnosed (11.8%). The lesions were most frequently located in the extremities, involving the forearms in nine patients. Indurated linear bands from the elbow to the hand were observed in five patients. In all of our patients the subcutaneous nodules appeared at the beginning of the disease. In six patients, the nodules remitted spontaneously in less than 2 years. In two cases foreign particles were detected under polarized light.
CONCLUSIONS: Subcutaneous sarcoidosis is a quite uniform clinicopathological entity usually appearing at the beginning of the disease. It usually heralds forms of sarcoidosis with nonsevere systemic involvement and is not associated with chronic fibrotic disease.
OBJECTIVE: Our purpose was to analyse the clinicopathological features of 10 patients with subcutaneous sarcoidosis and its relationship with the systemic features of the disease.
PATIENTS AND METHODS: The patients with systemic sarcoidosis, diagnosed from 1974 to 2002 at a university hospital in Barcelona, Spain, who developed subcutaneous involvement, were included in the study. The diagnosis of systemic sarcoidosis was made according to conventional criteria. All the patients were monitored prospectively at the sarcoidosis clinic of the hospital. Skin biopsies were performed when granulomatous cutaneous involvement was suspected clinically.
RESULTS: Granulomatous cutaneous involvement was demonstrated in 85 of 480 patients with systemic sarcoidosis. In 10 of these 85 patients subcutaneous sarcoidosis was diagnosed (11.8%). The lesions were most frequently located in the extremities, involving the forearms in nine patients. Indurated linear bands from the elbow to the hand were observed in five patients. In all of our patients the subcutaneous nodules appeared at the beginning of the disease. In six patients, the nodules remitted spontaneously in less than 2 years. In two cases foreign particles were detected under polarized light.
CONCLUSIONS: Subcutaneous sarcoidosis is a quite uniform clinicopathological entity usually appearing at the beginning of the disease. It usually heralds forms of sarcoidosis with nonsevere systemic involvement and is not associated with chronic fibrotic disease.
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