The annular or circinate form of sarcoidosis of the skin described above is a striking clinical expression of the disease. The lesions occur particularly on the forehead, face, and nape of the neck.

Description of Skin Lesions: This 49-year-old female had a 9-month history of smooth, slightly erythematous papules arranged in annular plaques on the dorsal aspects of both hands (see Figure 1).

The signalment (young pig, white breed) and location (medial thighs, abdomen) and classical appearance (coalescing annular to serpiginous raised, crusty, non-pruritic) of the lesions, combined ...