We report a case of pleural lipoblastoma in an 28-months-old female. Clinical presentation was pneumonia with fever and cough. Plain chest radiographs revealed a well-defined radiolucent mass on left lower thorax just above the diaphragm. CT scan demonstrated a pleural-based mass of fat density containing streaks of increased density. The mass was removed by surgery and confirmed as lipoblastoma arised from costal pleura.