A Case of Complete Remission of Nasal Cavity Poorly Differentiated Carcinoma With Targeted Therapy, to Which Surgery and Concurrent Chemoradiotherapy Was Ineffective / 대한이비인후과학회지

Nasal cavity and paranasal sinus cancers comprise about 1% of all malignancies, and 5% of head and neck malignancy. Squamous cell carcinoma comprises more than half of nasal cavity cancers. Treatment is determined by considering tumor size, location, staging, age, general condition, purpose of treatment, etc. Conventional therapy includes surgery, radiotherapy, and chemotherapy; however, for the locally advanced, recurrent, or metastatic cancer after conventional therapy, immunotherapy or targeted therapy are taken into consideration. Target therapy attacks specific cancer cells directly, such as cancer cells with certain gene mutation, whereas immunotherapy attacks cancer cells indirectly, stimulating our own immune system, such as T-cell activity. Histologically poorly differentiated carcinomas are treated with surgery, radiotherapy, and sometimes chemotherapy, but 5-year survival rate is low due to frequent recurrence. Here, we present a case of successful targeted therapy applied to recurrent nasal cavity cancer after serial application of conventional therapies.

Regional and Chronological Variation of Chemosensory Dysfunction in COVID-19: a Meta-Analysis

Background@#Olfactory and gustatory dysfunction are frequently reported in patients with coronavirus disease 2019 (COVID-19). However, the reported prevalence of olfactory and/or gustatory dysfunction varies widely, and the reason for the inter-study differences is unclear.Hence, in this meta-analysis, we performed subgroup analyses to investigate the factors that contribute to the inter-study variability in the prevalence of olfactory and gustatory dysfunction. @*Methods@#Out of 943 citations, we included 55 eligible studies with 13,527 patients with COVID-19 for a meta-analysis. Calculating the data extracted from each study, the weighted summary prevalence of olfactory and gustatory dysfunction was estimated using a FreemanTukey transformation with models based on random-effects assumptions. A meta-analysis of variance compared the prevalence of olfactory and gustatory dysfunction according to regional, chronological, demographic, and methodologic factors, respectively. @*Results@#The overall pooled prevalence rates of olfactory and gustatory dysfunction were 51.4% and 47.5%, respectively, in the random-effect model. In subgroup analyses, the prevalence rates of olfactory and gustatory dysfunction were significantly different among four geographical regions (both P < 0.001, respectively). Although the prevalence rates of olfactory and gustatory dysfunction did not significantly differ according to the time of enrollment, the subgroup analyses including only studies from the same geographical region (Europe) revealed a significant difference in olfactory dysfunction according to the time of enrollment. @*Conclusion@#The regional and chronological differences in the prevalence rates of olfactory and gustatory dysfunctions partly explain the wide inter-study variability.