Figure 1
Hand radiograph, anterior–posterior projection, showing soft tissue swelling and skeletal hypertrophy affecting the 3rd digit of the left hand.
Figure 2
Hand MRI. (A–B) Coronal T1-weighted and sagittal PDFS images showing lipomatous hypertrophy of the subcutaneous tissue of the third finger, predominant on the volar side. Small synovial cysts are present (Fig. 2B) and coincide with anechoic structures on ultrasound (Fig. 2C). (D) Axial T1-weighted image with no significant abnormalities of the median nerve (orange circle) and no space-occupying lesions. Axial T1-weighted images through the metacarpal heads (E) and proximal phalanx (F) show subtle fatty infiltration of the common volar digital nerves (yellow arrow) and proper volar digital nerves (red arrows). PD—proton density. FS—fat-saturated.
Figure 3
Sensorial cutaneous innervation of the hand and fingers (right: volar view and left: dorsal view).
Figure 4
Digit’s relevant anatomical structures (axial view of the proximal phalanx).