尿道结石的处理与预后的探讨（附46例报告）

目的：探讨尿道结石的处理方法与预后。方法：对46例尿道结石患者的临床资料进行回顾性分析，除9例患者采用开放性手术治疗以外，37例患者均采用内窥镜技术治疗尿道结石。结果：37例用内窥镜治疗的患者均达到较好疗效，经定期随访，预后均较满意，未见有尿道狭窄及其他并发症发生。结论：内窥镜手术是治疗尿道结石最安全的方法，预后较佳。     

Investigating the in vitro effect of taurine on the infant lymphocytes by sister chromatid exchange

BACKGROUND: Taurine (2-aminoethane sulphonic acid) is normally present in most mammalian tissues and the most abundant free amino acid in lymphocytes. It participates in various important physiological activities including modulation of the functioning of the central nervous system, cell proliferation, viability and prevention of oxidant-induced injury in many tissues. Its levels in human milk are very high which may be the most important difference from cow's milk. In contrast, an inverse association between breast-feeding and carcinogenesis in childhood or later in life has been suggested by several studies. METHODS: The study group consisted of eight healthy infants. Peripheral blood was collected and lymphocytes were cultured with either Taurine or Mitomycin C (MMC). Sister chromatid exchange in lymphocytes of the infants were calculated. RESULTS: Statistical differences were found between untreated and MMC-treated lymphocytes, untreated and MMC plus taurine-treated lymphocytes, and between MMC and MMC plus taurine-treated lymphocytes (P = 0.012). CONCLUSION: The results indicated that taurine plays a protective role in MMC-induced sister chromatid exchange in human lymphocytes. The authors suggest that the high levels of taurine found in human milk may induce protecting effects from breast-feeding against DNA damage and malignancy.     

Intratesticular varicocele: Report of two cases

Intratesticular varicocele is a rare entity and describes dilated intratesticular veins radiating from the mediastinum testis into the testicular parenchyma. Scrotal ultrasonography of two patients who presented to our urology clinic due to left scrotal pain revealed multiple tubular structures in the testes with diameters of more than 2 mm. Duplex spectral analysis showed a reversed flow response to Valsalva's maneuver. Apropos of two cases, intratesticular varicocele is reviewed.     

Pneumatosis coli: a case report with ultrastructural study

A case of pneumatosis intestinalis studied by light and electron microscopy is presented. The cysts are dilated lymphatic vessels. Abundant fine fatty globules are found in the cysts and in the histiocytes and mutlinucleated giant cells which line the lymphatics and which are present in the interstitium. The giant cell formation and florid histiocytic reaction are most probably due to leakage of fatty material from the dilated lymphatics.