Detection of Cutibacterium acnes from multiple miliary osteoma cutis

The patient had a history of acne vulgaris at a young age. The excisional biopsy from the nodule of the face showed the findings of multiple miliary osteoma cutis (MMOC). As Cutibacterium acnes were identified in calcified nodules, Cutibacterium acnes may be one of the triggering factors for MMOC. MMOC patients need proper skin care because the subcutaneous calcification is slowly formed even after middle age.