Postoperative infections in immunocompromised patients after oncological surgery

Patterns of major cutaneous surgeries and reconstructions in patients with cutaneous squamous cell carcinoma in the USA

Aim: Since use of major cutaneous surgeries/reconstructions among patients with cutaneous squamous cell carcinoma (CSCC) is not well described, we sought to quantify major cutaneous surgeries/reconstructions among patients with CSCC who were newly diagnosed and for those treated with systemic therapy, stratified by immune status. Methods: We used the Optum® Clinformatics® Data Mart database (2013-2020) and Kaplan-Meier estimators to assess risk of surgeries/reconstructions. Results: 450,803 patients were identified with an incident CSCC diagnosis, including 4111 patients with CSCC who initiated systemic therapy. The respective 7-year risks of major cutaneous surgeries/reconstructions were 10.9% (95% CI: 10.7-11.0) and 21.8% (95% CI: 17.6-25.8). Overall risk of major cutaneous surgeries/reconstructions was higher in patients who were immunocompromised than those who were immunocompetent. Conclusion: Approximately one in nine patients with CSCC will undergo ≥1 major cutaneous surgeries/reconstructions within 7 years of diagnosis; the risk increases in patients who initiate systemic therapy and among those who are immunocompromised.

Incidence of septicaemias and invasive mycoses in children undergoing treatment for solid tumours: a 12-year experience at a single Italian institution

We carried out a retrospective study on the infection rate--in episodes per 100 person months at risk (p/m/r)--of septicaemia and invasive mycoses in children with solid tumours treated at a single institution between 1985 and 1996. Among 982 patients, accounting for 8108 p/m/r, 257 infectious episodes were documented, for an infection rate of 3.2. The infection rate for "intensive" treatment was greater than that for "less intensive" treatments, 3.7 compared with 0.5, respectively; P<0.001. 58% of infectious episodes were associated with neutropenia, 22% were megatherapy-related, and 39% were related to central venous catheter (CVC), while in 13% of the episodes no risk factor was identified. Of the episodes, single organism Gram-positive bacteraemias accounted for 62%, single organism Gram-negative for 23%, multiple organism bacteraemias for 7%, invasive mycoses for 4%, and isolated fungaemias for 4%. The infection rate for Gram-positive organisms decreased significantly over time (-5.9% per year; P<0.01), but increased for the Gram-negative organisms (+3.4% per year; P=0.4). This study demonstrates that the risk of bacteraemia increases in parallel with the treatment intensity, and that a considerable number of children with solid tumours develop bacteraemia in the absence of an identifiable risk factor.