[A case of caseous calcification of mitral annulus resulting in multiple cerebral infarctions].

The patient is a 73-year-old woman. She presented with dysarthria, and a head MRI revealed multiple acute cerebral infarctions in the bilateral cerebral hemisphere and cerebellar hemisphere. Transesophageal echocardiography after admission revealed a 16 mm large mobile calcification of the mitral annulus (caseous calcification of the mitral annulus; CCMA) on the posterior apex of the mitral valve annulus.

Small vestibular schwannoma presented with trigeminal neuralgia: illustrative case.

Background: A vestibular schwannoma (VS) presenting with paroxysmal facial electric shock pain, that is, trigeminal neuralgia (TN), is relatively rare. Furthermore, TN is extremely rare in small VSs.

Observations: Herein, the authors report the case of a 52-year-old woman with a complaint of right TN.

[A case of cerebral venous sinus thrombosis following the vaccination with Tozinameran].

A 31-year-old man visited our hospital due to experiencing severe headaches, vomiting, and hypesthesia in the left side of his body. He had no past illnesses and had had no severe headaches before. The symptoms started the day after receiving the coronavirus disease 2019 (COVID-19) vaccination with Tozinameran.