Injection Site Mass: Diagnostic Evaluation, Pathogenesis, and Treatment
1. Introduction An injection site mass refers to a palpable, distinct structural anomaly that develops within the cutaneous, subcutaneous, or muscular tissue following a needle puncture. Clinically presenting as a firm nodule, a fluctuant pocket, or a dense plaque, this localized swelling represents a significant deviation from normal tissue architecture. The formation of a distinct … Read more