A Rare Pediatric Paratesticular Spindle Cell Rhabdomyosarcoma and Systematic Literature Review

Area of Science:

• Pediatric Oncology
• Rare Cancers
• Soft Tissue Sarcomas

Background:

• Paratesticular rhabdomyosarcoma (RMS) is a rare pediatric malignancy.
• The spindle cell subtype, while uncommon, typically has a favorable prognosis.

Purpose of the Study:

• To report a case of paratesticular spindle cell RMS with late recurrence.
• To review the literature on clinical presentation, treatment, and outcomes for this rare tumor.

Main Methods:

• Case report of a 12-year-old boy with paratesticular spindle cell RMS.
• Histopathological and immunohistochemical analysis.
• Systematic literature review.

Main Results:

• The patient presented with an inguinoscrotal mass, diagnosed as spindle cell RMS.
• Initial treatment followed the COG-ARST0531 protocol.
• A retroperitoneal lymph node recurrence occurred 1 year later, managed with surgery and escalated chemotherapy (COG-ARST0431 protocol).

Conclusions:

• Paratesticular spindle cell RMS, despite favorable histology, carries a risk of late regional recurrence.
• Vigilant long-term surveillance is crucial for managing this rare pediatric cancer.
• Effective treatment strategies involve multimodal approaches including surgery and chemotherapy.