Sarcoma botryoides: MRI findings in two patients

Area of Science:

• Pediatric Radiology
• Oncologic Imaging
• Soft Tissue Tumors

Background:

• Sarcoma botryoides, a rare subtype of rhabdomyosarcoma, predominantly affects pediatric patients, often originating in the vagina.
• Limited literature exists on the specific magnetic resonance (MR) imaging characteristics of this tumor.
• Understanding MR findings is crucial for accurate diagnosis and treatment planning in pediatric oncology.

Observation:

• Two pediatric cases of vaginal sarcoma botryoides were evaluated using MR imaging.
• Tumors presented with distinct signal intensities on T2-weighted images: areas of high signal intermixed with lower signal intensity regions.
• Significant post-contrast enhancement was observed in the lesions.

Findings:

• The observed MR signal heterogeneity and enhancement patterns reflect the known biphasic histologic architecture of sarcoma botryoides, comprising myxoid and cellular zones.
• Surgical confirmation established the tumor's extent, absence of local invasion, and lack of metastatic disease in both patients.
• Postoperative MR surveillance demonstrated no evidence of residual, recurrent, or metastatic disease.

Implications:

• MR imaging plays a vital role in characterizing sarcoma botryoides in pediatric patients.
• These findings enhance the understanding of MR appearances for this rare rhabdomyosarcoma subtype.
• Accurate MR assessment aids in surgical planning and postoperative monitoring, contributing to favorable patient outcomes.