The data contained within this paper are related to another paper entitled “Rare Spontaneous disappearance of intracranial aneurysm” (Yokoya et al., 2020). Spontaneous disappearance of an unruptured non-giant aneurysm of the anterior circulation is very rare. We identified a saccular cerebral aneurysm, which disappeared spontaneously and was followed up for 12 years. The present article describes the relevant clinical data of the patient, including her medical history and imaging findings.
