Primitive neuroectodermal tumor originating in the vulva: A case report.

Area of Science:

• Oncology
• Pathology
• Gynecologic Oncology

Background:

• Primitive neuroectodermal tumors (PNETs) are rare malignancies often associated with chromosomal translocations similar to Ewing's sarcoma.
• While typically originating in bone or soft tissue, PNETs can uncommonly arise in the vulva.

Purpose of the Study:

• To report a rare case of primary vulvar primitive neuroectodermal tumor (PNET).
• To highlight the diagnostic and therapeutic challenges associated with vulvar PNETs.
• To discuss the favorable prognosis in this specific case due to early intervention and multidisciplinary care.

Main Methods:

• Histopathological examination of a vulvar tumor.
• Immunohistochemical staining for MIC-2, synaptophysin, neuron-specific enolase, and neurofilament.
• Surgical excision of the primary tumor and inguinal lymph nodes.
• Multidisciplinary treatment approach for recurrent disease.

Main Results:

• A 60-year-old female presented with a recurrent vulvar tumor, diagnosed as PNET.
• Immunohistochemistry confirmed the diagnosis, showing positivity for neural markers.
• The patient achieved a disease-free status four years post-treatment, attributed to small tumor size and absence of metastasis.

Conclusions:

• Vulvar PNET is an exceptionally rare entity requiring high suspicion for diagnosis.
• Early detection, accurate histopathological diagnosis, and comprehensive multidisciplinary treatment are crucial for improving outcomes.
• This case suggests that even rare PNETs can have a favorable prognosis with timely and appropriate management.