Rhabdomyosarcoma (RMS), a malignant neoplasm of skeletal muscle origin, is the most common soft tissue sarcoma caused by infectious disease etiology, especially in nondeveloped countries. Despite being a relatively rare cancer, it accounts for approximately 40% of all recorded soft tissue sarcomas. Alveolar RMSs are seen to occur in children, while around 80% cases occur in the first three decades of life. We present here, a case of a 12-year-old child having alveolar RMS, presenting clinically and radiologically with pleural effusion.