case_images: PMC11730994_01
case_images: An orifice in the interdigital region between the third and fourth digits of the left hand, from which a hair shaft is observed emerging (red arrow).
case_images: gr1.jpg
case_images: PMC11730994_01_gr1.jpg
case_images: fig1
case_images: On dermatologic examination, the patient presented with a dermatosis between the third and fourth left digits, characterized by a 1 cm diameter papule with a central orifice from which a hair shaft was protruding (Fig 1).
case_images: A, Ultrasound image showing a cross-section between the third and fourth left metacarpals, demonstrating a heterogeneous nodular formation with interspersed hyperechoic linear images (blue arrows) in the dermis and subcutaneous tissue; B, Longitudinal section showing the continuity of hyperechoic images through an area of discontinuity in the interdigital epidermis (corresponding to hair follicles), indicated by the yellow arrow. C, Doppler study of the lesion reveals predominantly peripheral vascularization.
case_images: gr2.jpg
case_images: PMC11730994_01_gr2.jpg
case_images: fig2
case_images: Doppler study showed predominantly peripheral vascularization (Fig 2).