Nussbaum A R, Lebowitz R L
AJR Am J Roentgenol. 1983 Jul;141(1):65-71. doi: 10.2214/ajr.141.1.65.
When an interlabial mass is seen on physical examination in a little girl, there is often confusion about its etiology, its implications, and what should be done next. Five common interlabial masses, which superficially are strikingly similar, include a prolapsed ectopic ureterocele, a prolapsed urethra, a paraurethral cyst, hydro-(metro)colpos, and rhabdomyo sarcoma of the vagina (botryoid sarcoma). A prolapsed ectopic ureterocele occurs in white girls as a smooth mass which protrudes from the urethral meatus so that urine exits circumferentially. A prolapsed urethra occurs in black girls and resembles a donut with the urethral meatus in the center. A paraurethral cyst is smaller and displaces the meatus, so that the urinary stream is eccentric. Hydro(metro)colpos from hymenal imperforation presents as a smooth mass that fills the vaginal introitus, as opposed to the introital grapelike cluster of masses of botryoid sarcoma. Recommendations for efficient imaging are presented.
当在小女孩的体格检查中发现阴唇间肿物时，对于其病因、影响以及接下来该如何处理，常常会存在困惑。五种常见的阴唇间肿物，表面上极为相似，包括脱垂的异位输尿管囊肿、脱垂的尿道、尿道旁囊肿、阴道积水（子宫积水）以及阴道横纹肌肉瘤（葡萄状肉瘤）。脱垂的异位输尿管囊肿见于白人女孩，表现为从尿道口突出的光滑肿物，尿液呈环形流出。脱垂的尿道见于黑人女孩，形似中央有尿道口的甜甜圈。尿道旁囊肿较小，使尿道口移位，尿液呈偏心状流出。处女膜闭锁导致的阴道积水（子宫积水）表现为填满阴道口的光滑肿物，与葡萄状肉瘤的阴道口葡萄样肿物群不同。本文给出了有效成像的建议。
