Gallium-67 scintigraphy. The beard sign.
D000152:Acne Vulgaris / Q000150:complications / Q000000981:diagnostic imaging*; D000293:Adolescent; D005145:Face / Q000000981:diagnostic imaging*; D005710:Gallium Radioisotopes; D006801:Humans; D008297:Male; D010019:Osteomyelitis / Q000000981:diagnostic imaging* / Q000209:etiology; D011877:Radionuclide Imaging
D005710:Gallium Radioisotopes