患者女性，37岁，因背痛5年，X线检查发现右前上纵隔块影于1992年8月7月入我院。入院前5年，患者渐感右肩胛下隐痛，无放射痛，下蹲和咳嗽时疼痛加剧，休息后缓解。以后症状逐渐加重，近一年来右背部也出现隐痛并伴有食欲下降、体重减轻。入院前一周去当地医院行X线胸片检查，? The female patient, 37 years old, had a back pain of 5 years. The X-ray examination revealed that the right anterior mediastinal block shadow was admitted to our hospital in August of August 1992. In the five years prior to admission, the patient gradually felt pain in his right shoulder, no radiating pain, increased pain during squatting and coughing, and relief after rest. Later, the symptoms gradually worsened, and in the past year, the right back also experienced pain and decreased appetite and weight loss. One week before admission, I went to a local hospital for an X-ray examination.