Left wrist/hand mass Note that the examination is limited by the patient terminating the study prematurely. Also note that the patient declined administration of intravenous contrast.A marker was placed on the mass in question which is subcutaneous in nature and situated volar and radial to the second metacarpal head. The mass is isointense to skeletal muscle on T1WI while on fat-suppressed T2 images, it contains contains an area of low signal intensity centrally surrounded by a rind of high signal intensity. It measures approximately 8 mm in the greatest transverse dimension and 9 mm longitudinally and does not appear associated with any underlying tendon. A small cluster of vascular structures is noted immediately posterior to the mass suggesting the possibility of a vascular malformation with central thrombosis.Small ganglia are noted along the volar margin of the distal radius. The remaining soft tissues are unremarkable with no additional masses identified. Mild osteoarthritis affects the basilar joint and the remaining marrow signal of the hand is otherwise normal for the patient's age.
Small subcutaneous mass volar and radial to the head of the second metacarpal as detailed above. Although we cannot make an exact histological diagnosis on the basis of this imaging, the possibility of a small vascular malformation is considered.