Immunology and Host ResponseInfant Pyogenic Liver Abscess Complicated With Autoimmune Neutropenia: Two CasesOtake, Shogo MD*; Tamashiro, Rin MD*; Morisada, Naoya MD, PhD†; Kasai, Masashi MD*Author Information From the *Division of Infectious Disease †Division of Clinical Genetics, Department of Pediatrics, Hyogo Prefectural Kobe Children’s Hospital, Minatojima Minamimachi, Japan. Accepted for publication August 30, 2020. The authors have no funding or conflicts of interest to disclose. We obtained written, informed consent from the patient’s parents before writing this case report. Address for correspondence: Shogo Otake, MD, Division of Infectious Disease, Department of Pediatrics, Hyogo Prefectural Kobe Children’s Hospital, 1-6-7, Minato-Jima Minami-Machi, Kobe-shi Chuo-Ku, Hyogo 650-0047, Japan. E-mail: [email protected]. The Pediatric Infectious Disease Journal: February 2021 - Volume 40 - Issue 2 - p 151-153 doi: 10.1097/INF.0000000000002915 Buy Metrics Abstract Approximately 90% of patients with autoimmune neutropenia (AIN) suffer from mild infections although neutrophil count often decreases to <500/μL. Here, we report 2 cases of infant pyogenic liver abscess complicated with AIN. We should consider the possibility of AIN as an underlying disease when diagnosing pyogenic liver abscess during childhood. Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.