Hypopharynx, oropharynx morphology and histology in severe Coronavirus 2 patients treated by noninvasive ventilation: comparison between full-face mask and helmet strategies.

BACKGROUND: Non-invasive ventilation may alter the morphology and histology of the upper airway mucosa. This study aimed to investigate the alterations of hypopharynx and oropharynx mucosa, identified during oro-tracheal intubation procedure via video-assisted laryngoscopy, in severe acute respiratory syndrome Coronavirus 2 related, treated by non-invasive ventilation via full-face mask or helmet. METHODS: Data of patients affected by Coronavirus 2 admitted to COVID Hospital of L'Aquila (Italy), presenting hypopharynx and oropharynx morphology alterations, requiring oro-tracheal intubation for invasive ventilation and initially treated with non-invasive ventilation were included in the study. The study aimed to investigate the upper airway mucosa alterations using oropharyngeal and hypopharyngeal images and biopsies taken during video-assisted-laryngoscopy. Data from the hypopharynx and oropharynx morphology and histology alterations between non-invasive ventilation via a full-face mask or helmet used during hospitalization were compared. RESULTS: From 220 data recorded, 60 patients were included in the study and classified into non-invasive ventilation full-face mask group (30/60) and via helmet group. Comparing data between groups, significant differences were found with respect to hyperemia (77% vs. 20%), laryngeal bleeding ulcerations (87% vs. 13%), and vocal cord edema with >50% narrowing of the tracheal lumen (73% vs. 7%), respectively. The histology examination revealed fibrin-necrotic exudate with extensive necrotic degenerative changes in the sample tissue of the groups. There were not any differences in the duration time of non-invasive ventilation, time from hospitalization and the start of ventilation between groups. CONCLUSIONS: The data from this research suggested that there were differences in airway mucosa damages among patients treated with a full-face mask or helmet. Further studies should be planned to understand which non-invasive ventilation support may mitigate upper airway mucosa damages when oro-tracheal intubation is requested for invasive respiratory support.

The Effect of the COVID-19 Lockdown on Melanoma Diagnosis in Italy.

The coronavirus disease 2019 (COVID-19) pandemic has led to lockdowns for much of the world. In Italy, all health procedures not directly related to COVID-19 were reduced or suspended, thus limiting patient access to hospitals. Any delay in cancer treatment presents the additional risk of tumors progressing from being curable to incurable. Specifically, melanoma survival rate strictly depends on tumor thickness, which, in turn, is a function of time. To estimate the impact on melanoma progression caused by the reduction in dermatologic services during the COVID-19 lockdown, a retrospective observational cohort study was conducted. This study was designed to compare the clinical and histologic characteristics of the primary melanomas removed in the first 2 months after the end of the lockdown (May-July 2020) in 12 Italian centers characterized by different COVID-19 case frequencies. The control group was represented by the melanomas removed during the same period in the previous 3 years. Overall, 1,124 melanomas were considered: 237 as part of the study group and 887 from the control group (average, 295), with a 20% reduction. Breslow thickness, as well as high-risk histotypes and melanomas with vertical growth, increased for all melanomas. Ulcerated and high mitotic index melanomas increased, particularly in northern Italy. In Italy, the lockdown led to a significant worsening of melanoma severity, causing a staging jump, with a consequent worsening of outcomes.