BACKGROUND: Optimal management of neutropenic appendicitis (NA) in children undergoing cancer therapy remains undefined. Management strategies include upfront appendectomy or initial nonoperative management. We aimed to characterize the effect of management strategy on complications and length of stay (LOS) and describe implications for chemotherapy delay or alteration.METHODS: Sites from the Pediatric Surgery Oncology Research Collaborative performed a retrospective review of children with NA over a 6-year period.RESULTS: Sixty-six children, with a median age of 11 years (range 1-17), were identified with NA while undergoing cancer treatment. The most common cancer diagnoses were leukemia (62%) and brain tumor (12%). Upfront appendectomy was performed in 41% of patients; the remainder had initial nonoperative management. Rates of abscess or perforation at diagnosis were equivalent in the groups (30% vs 24%; P = .23). Of patients who had initial nonoperative management, 46% (17 of 37) underwent delayed appendectomy during the same hospitalization. Delayed appendectomy was due to failure of initial nonoperative management in 65% (n = 11) and count recovery in 35% (n = 6). Cancer therapy was delayed in 35% (n = 23). Initial nonoperative management was associated with a delay in cancer treatment (46% vs. 22%, P = .05) and longer LOS (29 vs 12 days; P = .01). Patients who had initial nonoperative management and delayed appendectomy had a higher rate of postoperative complications (P , .01). CONCLUSIONS:In pediatric patients with NA from oncologic treatment, upfront appendectomy resulted in lower complication rates, reduced LOS, and fewer alterations in chemotherapy regimens compared to initial nonoperative management. WHAT'S KNOWN ON THIS SUBJECT:The optimal management of neutropenic appendicitis in children undergoing cancer therapy remains undefined. Management strategies include upfront appendectomy or initial nonoperative management. There are no accepted consensus guidelines. As a result, there is provider-dependent variation in treatment strategies.WHAT THIS STUDY ADDS: In this largest sample to date of pediatric patients with appendicitis and neutropenia secondary to oncologic treatment, upfront appendectomy was associated with lower complication rates, reduced lengths of stay, and fewer alterations in chemotherapy regimens, as compared to upfront nonoperative management.

Children with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection have been consistently described with milder clinical outcomes compared to adults. [1][2][3] Whereas increased rates of severe illness and death have been reported in adults with cancer and concurrent SARS-CoV-2 infection, 4-7 previous studies in pediatric cancers have yielded conflicting results with regards to infection outcomes. [8][9][10][11] Herein, we report the baseline characteristics and clinical outcomes of 31 pediatric oncology patients who were diagnosed with SARS-CoV-2 infection at the four pediatric oncology centers in the

Background: Patients with sickle cell disease (SCD) are considered at higher risk of severe COVID-19 infection. However, morbidity and mortality rates are variable among countries. To date, there are no published reports that document outcomes of SCD patients with COVID-19 in Canada. Methods: A web-based registry was implemented in June 2020 capturing outcomes of SCD patients with COVID-19 from March 2020 to April 2022 and comparing them to the general population of Quebec, Canada. Results: After 24 months of the pandemic, 185 SCD patients with confirmed SARS-CoV-2 infection were included in the registry. Overall, the population was young (median age 12 years old) and had few comorbidities. No deaths were reported. Risk of hospitalization and admission to intensive care unit (ICU) because of COVID-19 was higher in patients with SCD than in the general population (relative risks (RR) 5.15 (95% confidence interval (95% CI) 3.84–6.91), p ˂ 0.001 and 4.56 (95% CI 2.09–9.93) p ˂ 0.001). A history of arterial hypertension or acute chest syndrome in the past 12 months was associated with a higher risk of severe disease (RR = 3.06 (95% CI 1.85–5.06) p = 0.008 and 2.27 (95% CI 1.35–3.83) p = 0.01). Hospitalized patients had lower hemoglobin F than non-hospitalized patients (12% vs. 17%, p = 0.02). For those who had access to vaccination at the time of infection, 25 out of 26 patients were adequately vaccinated and had mild disease. Conclusions: The SCD population is at higher risk of severe disease than the general population. However, we report favorable outcomes as no deaths occurred. Registries will continue to be critical to document the impact of novel COVID-19 specific therapy and vaccines for the SCD population.

Variation of C-reactive protein (CRP) throughout the hospitalization course (blue line). COVID-19 test results are identified in green when positive and red when negative. The day of ALL diagnosis, the day of chemotherapy start (black arrows), the duration of hospitalization (red box), and the duration of symptoms (green box) are indicated. Induction chemotherapy includes methylprednisolone/prednisone (days 1-32), vincristine (days 4, 11, 18, and 25), PEG-asparaginase (day 7), and intrathecal cytarabine (days 1 and 18) CONFLICT OF INTEREST The authors declare that there is no conflict of interest.