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Figure 1.
A skin-colored, fixed 40×30 cm mass with an overlying skin necrosis and granulation tissue at the posterior scalp.
Figure 2.
CT scan of brain with contrast (sagittal view).
Figure 3.
CT scan of brain with contrast (axial view).
Figure 4.
A 38×26.5×19.7 cm subcutaneous posterior scalp mass, compared to a 15 cm ruler.
Figure 5.
Cross section of the tan white, variegated, lobulated, and rubbery posterior scalp mass.
Figure 6.
Histopathology and immunohistochemistry of dermatofibrosarcoma protuberans (DFSP) mass on the posterior scalp. (A) Hematoxylin-and-eosin-stained images of DFSP showed spindle cell tumor in storiform pattern (200×). (B) Hematoxylin-and-eosin-stained images of DFSP showed spindle-shaped cells, arranged in intersecting fascicles that resembled a herring bone appearance (400×). (C) Immunostaining profiling displayed strong CD34 expression in the storiform area (200×).
Figure 7.
Two months post wide excision of the posterior scalp mass, delayed reconstruction with free flap coverage from the right anterolateral thigh was performed.