高收缩共聚酯合成性能与成纤性能研究

通过共聚酯PEIT(间苯二甲酸、对苯二甲酸、乙二醇共聚物)的合成及其全拉伸丝(FDY)纺丝的成功实验,研究了高收缩PEIT共聚物合成工艺中共聚组分间苯二甲酸(IPA)的摩尔百分数对共聚酯PEIT的玻璃化温度、熔点的影响,探讨了该PEIT共聚物的结晶性能及其纺丝工艺条件对高收缩纤维性能的影响。     

Hyperparathyroidism caused by distant pulmonary lesions and parathyromatosis after ethanol injection/parathyroidectomy for secondary hyperparathyroidism

Secondary hyperparathyroidism (SHPT) treatment includes parathyroidectomy and percutaneous ethanol injection therapy (PEIT), which are invasive procedures. The condition in which benign hyperfunctioning parathyroid tissue is distributed throughout the neck and mediastinum is termed parathyromatosis. Here, we present the case of a 51‐year‐old woman who began hemodialysis in 1986 due to chronic kidney disease of unknown etiology and developed SHPT in 1999. She underwent 6 rounds of PEIT followed by total a parathyroidectomy with partial forearm autotransplantation. Between 2011 and 2013, surgeons removed several nodules from her pulmonary and cervical regions and the transplanted masses from her forearm; all showed hyperplasia but exhibited no histological evidence of malignancy. Damage to the parathyroid capsule after repeated PEITs may cause local cervical recurrence and pulmonary lesions, although distant lesions are extremely rare in SHPT. This case is of interest due to the possible association between PEIT and parathyromatosis and distal lesions.