Pharyngocutaneous fistula after total laryngectomy: A systematic review and meta-analysis of risk factors.

Objective: The pharyngocutaneous fistula (PCF) is the troublesome complication after total laryngectomy. Despite a large number of investigations having been performed, there is still controversy about which factors are most significant for PCF. The objective of the present meta-analysis was to analyze the potential risk factors for PCF after total laryngectomy.

Incidence of cytomegalovirus infection in Shanghai, China.

A city-wide cytomegalovirus serosurvey was conducted in Shanghai, China, and associated parameters were calculated by employing the catalytic model. The lowest seroprevalence was 60.37%, found in the >1- to 3-year age group.

[Histopathological study on the regularity of pyriform sinus carcinoma invading adjacent tissue and structure].

Objective: To explore the regularity invading adjacent tissue of pyriform sinus carcinoma.

Methods: The whole organ serial section of 68 total or partial laryngectomy and hypopharyngectomy specimen of pyriform sinus carcinoma were histopathologically studied.

Results: In 68 pyriform sinus carcinoma, invaded ventricular and paraglottic spaces was 63 and 38 cases respectively, the difference of invasive frequency of both spaces was significantly marked (chi2 = 21.