Characteristics and outcomes of advanced melanoma patients with complete response and elective discontinuation of first-line anti-programmed death-1 monotherapy: A real-world multicentre observational cohort study.

Anti-programmed death-1 (anti-PD1) treatment has significantly improved outcomes of advanced melanoma with a considerable percentage of patients achieving complete response (CR). This real-world study analyzed the feasibility of elective anti-PD1 discontinuation in advanced melanoma patients with CR and evaluated factors related to sustained response. Thirty-five patients with advanced cutaneous or primary unknown melanoma with CR to nivolumab or pembrolizumab from 11 centers were included.

SARS-CoV-2 infection in patients with melanoma: results of the Spanish Melanoma Group registry.

Background: The Spanish Melanoma Group (GEM) developed a national registry of patients with melanoma infected by SARS-CoV-2 ("GRAVID").

Methods: The main objective was to describe the COVID-19 fatality rate in patients with melanoma throughout the pandemic, as well as to explore the effect of melanoma treatment and tumor stage on the risk of COVID-19 complications. These are the final data of the register, including cases from February 2020 to September 2021.

Analysis of potential risk factors in the survival of patients with primary retroperitoneal liposarcoma.

Introduction: The present work is an observational study of a series of variables regarding overall survival and disease-free survival in patients diagnosed with primary liposarcoma.

Methods: The study is prospective with retrolective data collection that includes all patients with primary liposarcoma referred to Hospital Son Espases University Hospital, Palma de Mallorca, Spain from January 1990 to December 2019.

Results: The study includes 50 patients and the compartment surgery was performed in 18 patients (36%) of cases.

Analysis of potential risk factors in the survival of patients with primary retroperitoneal liposarcoma.

Introduction: The present work is an observational study of a series of variables regarding overall survival and disease-free survival in patients diagnosed with primary liposarcoma.

Methods: The study is prospective with retrolective data collection that includes all patients with primary liposarcoma referred to Hospital Son Espases University Hospital, Palma de Mallorca, Spain from January 1990 to December 2019.

Results: The study includes 50 patients and the compartment surgery was performed in 18 patients (36%) of cases.

Extraosseous Ewing sarcoma: Expanding the differential diagnosis of supraclavicular fossa tumors.

A broad spectrum of diseases can be included in the differential diagnosis of neck masses. We report a case of extraosseous Ewing sarcoma that presented as a neck mass in a 70-year-old man. To the best of our knowledge, this is the first reported case of extraosseous Ewing sarcoma of the supraclavicular fossa.