Urethral masses are one of the symptoms of urethral cancer. Urethral cancer can be detected by vaginal palpation, and vaginal examination can reveal thickened and hardened urethral masses and stripes. Vaginal examination can reveal the size, texture and mobility of the lesion, and vaginal double examination can reveal the presence of bladder and pelvic metastases. About 50% of urethral cancers are secondary to metastatic epithelial carcinoma of the bladder, ureter or renal pelvis. Primary urethral cancer is relatively rare and occurs mainly in women. The cause of urethral cancer is not clear, but it is not related to the possibility of occurrence of urethral meatus. Urethral white spots may be pre-cancerous lesions, and urethral cancer is similar to urethral meatus, polyps and papilloma in early stage, which should be differentiated and biopsied if necessary. The following diseases are the causes of striated masses in the urethra: 1. Paraurethral adenocarcinoma Paraurethral adenocarcinoma occurs around the opening of the urethra in the vulvar vestibule and is a rare malignant tumor. Paraurethral adenocarcinoma is very rare The proportion of adenocarcinoma in female urethral cancer in China is significantly higher than that in other countries. The tumor can occur in any age group, from as young as 4 years old to as old as 80 years old, but it is more likely to occur in postmenopausal and older women mostly between 50 and 70 years old 75% of patients are older than 50 years old, with an average of 60 years old. Whites are more susceptible to this disease than blacks. 2. Vulvar hemangioepithelioma Vulvar hemangioepithelioma is characterized by the proliferation of tumor cells outside the basement membrane and can be benign or malignant. The malignant ones can be called hemangiopericytoma sarcoma, or collectively hemangiopericytoma. 3, urethral diverticulum Urethral diverticulum (urethral diverticulum) is a cystic cavity around the urethra that communicates with the urethra. It can be congenital or acquired. Congenital urethral diverticula are more common in women and are mostly solitary, located between the urethra and the vagina; in men they are mostly located on the ventral side of the urethra at the penile-scrotal junction. The size of the diverticulum and the width of the neck vary, as do the degree of urinary obstruction and symptoms caused.