2022 Volume 21 Issue 4 Pages 272-275
A 48-year-oldJapanese male complainedof a postoperative tumor that expandedgradually. A slightly soft, comparatively well-defined, subcutaneous tumor, 90×45 mm in size, was foundin the middle to the right side of the posterior neck. The patient received surgical resection. Histopathological findings showed haphazardly arranged thick collagen bundles from the dermis to subcutaneous tissue. Adipose tissue and nerve fiber bundles were observed surrounding the tumor. Immunohistological findings showed that the spindle-shaped cells between the collagen bundles were positive for CD34, CD99, andvimentin. This case was diagnosedas nuchal-type fibroma. Although it is a rare disease with only a few cases reported in Japan so far, regular postoperative observation is necessary because of the possibility of recurrence. Skin Research, 21 : 272-275, 2022
