Prevalence of human papillomavirus in benign and malignant laryngeal lesions in Egyptian patients: Cross-sectional study

OBJECTIVE

To assess the prevalence of human papillomavirus (HPV) in benign and malignant laryngeal lesions among Egyptian patients.

DESIGN

Observational analytical cross-sectional study.

SETTING

Ain Shams University hospital, Otorhinolaryngology department PARTICIPANTS: Formalin-fixed paraffin-embedded specimens of 126 patients (70 benign laryngeal lesions and 56 squamous cell carcinoma lesions) were assessed for the presence of HPV DNA using MY09/11 PCR-based DNA detection.

MAIN OUTCOME MEASURES

Percentage of positive samples was calculated.

RESULTS

All 70 benign laryngeal lesion specimens were negative for the HPV DNA, while 2 of the 56 squamous cell carcinoma lesions (3.6%) were positive.

CONCLUSIONS

The presence of HPV DNA in only two specimens in our study suggests that the proportion of laryngeal squamous cell carcinomas attributable to infection by HPV seems to be very low in Egypt.

The added value of pretreatment DW MRI in characterization of salivary glands pathologies

OBJECTIVE

To evaluate the added value of diffusion weighted magnetic resonance imaging (DW-MRI) in characterization of salivary gland lesions.

STUDY DESIGN

A prospective study was carried out between January 2013, and March 2015.

METHODS

The study included 46 patients. The consultant radiologist, who reviewed the scans to comment on the apparent diffusion coefficient (ADC) value and ADC histogram was blind to the suspected pathology. Radiological findings were then compared to clinical and histological findings.

RESULTS

The diagnostic performance of DW-MRI for identification of malignant lesions showed that the sensitivity, specificity, and positive and negative prediction value were 100%, 92%, 91.3%, and 100%, respectively.

CONCLUSION

The specific ability of DW-MRI to probe tissue microstructures is an interesting complement to the currently used imaging procedures in the characterization, and even grading of malignancies. ADC mapping is an easy, cost effective promising tool that has neither radiation exposure, nor amalgam artifacts and can be used in helping characterization of salivary glands lesions.

LEVEL OF EVIDENCE

1B.