The “dot-in-circle” sign in musculoskeletal mycetoma on magnetic resonance imaging and ultrasonography.
WortsmanX, CarreñoL & Ferreira-WortsmanC et al.:
Ultrasound characteristics of the hair follicles and tracts, sebaceous glands, Montgomery glands, apocrine glands, and arrector pili muscles.
J Ultrasound Med38: 1995,
AnkadBBeergoudarSNikamB:Dermatoscopy in actinomycetoma: an observation.
Indian Dermatol Online J10: 330,
We present the ultrasonographic morphology of an actinomycetoma of the foot at 18 and 70 MHz (high-frequency and ultrahigh-frequency ultrasound, respectively), and describe an ultrasonographic sign that may help to discriminate between eumycetoma and actinomycetoma called the “bright hyperechoic halo.” To date, this is the first report on the morphology of mycetoma at 70 MHz with a clinical, ultrasonographic, and histologic correlation of the images, which provides ultrasound images that are very similar to the lower magnification of histology.
Department of Dermatology, Universidad de Chile, Santiago, Chile.
Department of Dermatology, Hospital Salvador, Santiago, Chile.
Department of Pathology, Hospital Salvador, Santiago, Chile.
Institute for Diagnostic Imaging and Research of the Skin and Soft Tissues, Santiago, Chile.
Corresponding author: Ximena Wortsman, MD, Institute for Diagnostic Imaging and Research of the Skin and Soft Tissues, Department of Dermatology, Universidad de Chile, Santiago, Chile. (E-mail: firstname.lastname@example.org)