A Rare Presentation of Undifferentiated Pleomorphic Sarcoma in the Subpectoral Space

Soft tissue sarcomas (STS) are often described as asymptomatic, rapidly expanding masses, particularly in the extremities or trunk. Undifferentiated pleomorphic sarcoma (UPS), a high-grade variant of STS, ranks second most prevalent subtype United States. It predominantly affects males between their fifth and seventh decades. Its benign symptomatology, however, can lead to initial misdiagnosis subsequent mismanagement. We present case 57-year-old Caucasian male, previously good health, who experienced recurring subpectoral lesion causing discomfort mass-related effects. Initial management included incision drainage, which provided temporary relief. The biopsy revealed diagnosis grade 3 UPS. lesion's recurrence two months later was accompanied by local invasion into adjacent skin musculature well metastasis right hemiliver. A comprehensive understanding UPS among medical professionals is vital for accurate facilitating prompt intervention prevent avoidable complications optimize patient outcomes.