Abstract
Superficial acral fibromyxoma (SAF) is a tumor that occurs on the distal phalanges of the digits. As it does not spontaneously regress and is often associated with pain, the primary treatment is surgical resection. It is often associated with the nail component of the affected digit, and thus cosmesis is an important goal of the operation. We herein describe a case of SAF on the distal phalanges of the fifth digit of the foot beneath the nail, which was successfully resected with the nail component kept intact. Moreover, although SAF is most commonly CD34-positive, the present case was CD34-negative except for endothelial cells within the tumor. While CD34-negative SAF has been previously reported, the current case further indicates that CD34-positivity is not essential for the diagnosis of SAF.
Highlights
There are a variety of tumors that can affect the acral extremities including superficial acral fibromyxoma (SAF), fibroma, exostosis, enchondroma, tyloticums, and gloms tumor
As it does not spontaneously regress and is often associated with pain, the primary treatment is surgical resection. It is often associated with the nail component of the affected digit, and cosmesis is an important goal of the operation
We describe a case of Superficial acral fibromyxoma (SAF) on the distal phalanges of the fifth digit of the foot beneath the nail, which was successfully resected with the nail component kept intact
Summary
There are a variety of tumors that can affect the acral extremities including superficial acral fibromyxoma (SAF), fibroma, exostosis, enchondroma, tyloticums, and gloms tumor. The growth of some of these is accompanied with pain and digital deformity. SAF is a tumor observed in the apical area and is usually accompanied with pain secondary to the stiffness of tumor within its capsule. When the tumor is associated with the nail, cosmesis is an important factor during tumor resection. We report a case of SAF growing beneath the nail of the right fifth toe which was successfully removed with the nail component kept intact. Immunohistochemical analysis indicated that the resected tumor did not stain positive for CD34, which is rare in cases of SAF
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