化学感受器瘤 ,指发生于人体化学感受器的肿瘤 ,约 98%发生在颈动脉体及颈静脉体。本例发生于肋骨的化学感受器瘤为十分少见病例 ,现报告如下。患者　男 ,48岁。因右季肋部包块 1年多 ,逐渐增大伴疼痛 1月余而入院。查体 :于右第 9后肋间腋后线扪及约 3 .5cm× 6.5cm大小包块 , Chemoreceptor neoplasms refer to tumors that occur in the body’s chemoreceptors and about 98% occur in the carotid body and jugular vein. This case occurred in rib chest tumor is very rare cases are reported as follows. Male patient, 48 years old. Due to the right quarter of the rib mass more than 1 year, gradually increased with more than 1 month of pain and admission. Physical examination: on the right after the ninth intercostal axillary palpable about 3.5cm × 6.5cm size of the mass,