Primary Retroperitoneal Tumor with Unexpected Gingival Involvement.

Area of Science:

• Oncology
• Pathology

Background:

• Retroperitoneal tumors pose diagnostic challenges.
• Histopathological analysis is key for diagnosis.

Observation:

• A 62-year-old woman presented with a massive retroperitoneal tumor.
• Unexpected gingival swelling was noted.
• Gingival biopsy revealed Burkitt's lymphoma (BL).

Findings:

• Gingival biopsy provided a prompt pathological diagnosis.
• Avoided invasive procedures for retroperitoneal tumor diagnosis.
• Facilitated immediate chemotherapy initiation.

Implications:

• BL should be considered in retroperitoneal tumor differential diagnoses.
• Systemic screening is crucial for early BL detection.
• Prompt diagnosis enables potentially curative chemotherapy.