Acute Focal Bacterial Nephritis and Bacteremia Due to Staphylococcus simulans Following an Upper Respiratory Infection in a Child: A Case Report.

Coagulase-negative (CoNS) is a rare cause of UTIs in children and is often regarded as a contaminant in urine samples. We report a case of acute focal bacterial nephritis (AFBN) and bacteremia caused by following an upper respiratory infection in a pediatric patient. The patient, a four-year-old girl, presented with fever, cough, and a runny nose two days before being referred to our hospital due to persistent fever and poor oral intake.

The First Case of a Child Infected with SARS-CoV-2 Omicron Variant in Japan, December 2021.

We report the first pediatric patient infected with the Omicron variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in Japan. The patient was a one-year-old boy who resided in Japan. He went abroad with his parents from November 12, 2021 to November 28, 2021 and had no known contact with coronavirus disease (COVID-19) patients there.

[Hematological neoplasia associated with primary mediastinal germ-cell tumor treated with hematopoietic stem cell transplantation].

The occurrence of a primary mediastinal germ cell tumor and hematological neoplasia provides a poor prognosis that is known to be fatal at a median of 6 months after onset. We report the case of a 15-year-old male who was treated with chemotherapy and hematopoietic cell transplantation based on a report of a surviving case. At diagnosis, the patient had an unresectable mediastinal tumor with elevated alpha-fetoprotein and human chorionic gonadotropin levels and acute megakaryoblastic leukemia.