A Giant Aneurysm of Vieussens' Arterial Ring With Pulmonary Artery Fistula.

A 79-year-old woman presented with a systolic murmur and dyspnea on exertion. Transthoracic echocardiography and multidetector-row computed tomography revealed a giant aneurysm in an abnormal vessel known as Vieussens' arterial ring (VAR). A pulmonary artery VAR fistula was also observed.

A case report: Clozapine-induced leukopenia and neutropenia after mRNA COVID-19 vaccination.

Clozapine is an atypical antipsychotic used for treatment-resistant schizophrenia and is known to cause serious side effects, such as leukopenia and neutropenia. We encountered the case of a 44-year-old female patient with a good response to clozapine, who experienced inflammatory reaction and cytopenia after coronavirus disease 2019 (COVID-19) vaccination. Soon after clozapine discontinuation, the inflammatory reaction resolved, and cell counts recovered.