PMC9091394_01
Radiolucency of the metacarpal head of the third finger (arrow).
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F1
An oblique view of the plain radiograph indicated radiolucency in the metacarpal head (Fig. 1).
Bone destruction of the metacarpal head (arrow).
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F2
CT scan study indicated bone destruction in the metacarpal head (Fig. 2).
MRI. Tumor invaded into the metacarpal head.
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F3
T1 and high intensity on STIR sequences (Fig. 3). The mass extended into the metacarpal head (Fig. 3).
The mass contacted to tendon sheath and invaded into the metacarpal head.
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F4
The mass could be easily pulled out after detach and removal of the surrounding tissue though it destructed the metacarpal head and invaded into the metacarpal bone (Fig. 4a and b).
(a) Resected tumor: A lobular and multinodular shape. (b) Lobular fibrotic nodular lesion with clear margins involving the surrounding tissue (striated muscle: M, HE stain: x20). (c) Abundant collagenous fiber as well as slight fibroblast proliferation and capillary distribution (HE stain: x200).
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F5
Pathological findings indicated a lobular and multinodular structure and the internal structure of the nodule comprised slightly dense fibrous connective tissues, and thus concluded that the tumor was FTS (Fig. 5a-c).