Systematic review of population-based bladder cancer registries: How criteria heterogeneity affects the comparison of incidences.

Background: The population-based registry of bladder cancer (BC) raises specific problems intrinsic to the tumor, as the inclusion of noninfiltrating, potentially malignant and multiple tumors. We performed a systematic review (PRISMA guidelines) of population-based BC registries to obtain information on their geographic areas involved, last dates of real incidence of BC, and rules coding used in BC for uncertain behavior, in situ and multiple tumors.

Methods: Using MEDLINE and Google Scholar, we identified scientific publications of in the last 10 years in English or Spanish, whether they were related to a national or international cancer registry, provided information on registry rules, and provided data on the incidence of BC.

Outcomes and survival of tracheostomised patients during the COVID-19 pandemic in a third level hospital.

Purpose: Analyse the evolution and outcomes of COVID-19 tracheostomised patients. Clarify if this cohort presents an increased risk of haemorrhagic complications and verify the correlation between some risk factors with increased mortality.

Methods: A retrospective single-centre observational study of a prospective cohort of all COVID-19 patients admitted to our centre between March and April 2020.