Recurrent dermatofibrosarcoma protuberans involving the lacrimal sac: A case report

Figure 1 A case of recurrent dermatofibrosarcoma of lacrimal sac in a young female. A: Clinical photo showing a medial canthal soft tissue mass extending to the nasolacrimal duct; B: Contrast-enhanced computed tomography of the face demonstrated a well-defined soft tissue mass extending from the medial canthus to the nasolacrimal duct, with canal dilation but no bony erosion or orbital extension; C: Intraoperative photo after tumor excision showing the grossly enlarged nasolacrimal canal (marked in yellow arrow); D: Clinical photo taken after 2 years of follow-up showing a depressed scar with acceptable cosmesis without any recurrence.

Figure 2 Histopathological characteristics of the excised specimen confirming the diagnosis of dermatofibrosarcoma protruberans. A: Histopathology hematoxylin and eosin staining, 400 ×. The tumor is composed of spindle cells arranged in a storiform pattern. The cells showed elongated nuclei, abundant fibrillar cytoplasm, and mild nuclear atypia; B: Immunohistochemistry showed that the tumor cells have strong and diffuse positivity for cluster of differentiation 34.