Department of Neurosurgery, Aichi Medical University, Japan.
Department of Surgical Pathology, Aichi Medical University, Japan.
Intern Med. 2023 Mar 15;62(6):915-921. doi: 10.2169/internalmedicine.9447-22. Epub 2022 Aug 20.
Yolk sac tumor (YST) is a rare primary brain tumor that occurs almost exclusively in patients under 30 years old. Intracranial germ cell tumors are most frequently located in the pineal and suprasellar region. Medulla oblongata YSTs are particularly rare. Extragonadal YSTs may be difficult to diagnose because of their characteristics, such as the rarity and variety of growth patterns. Furthermore, they are known to have a very poor prognosis. We herein report a case of YST of the medulla oblongata in a 50-year-old woman. She was followed up for 18 months without any tumor recurrence.
卵黄囊瘤（YST）是一种罕见的原发性脑肿瘤，几乎仅发生于 30 岁以下的患者。颅内生殖细胞肿瘤最常位于松果体和鞍上区。延髓 YST 则特别罕见。由于其罕见性和多种生长方式，性腺外 YST 可能难以诊断。此外，它们的预后通常很差。我们在此报告一例 50 岁女性延髓 YST 病例。患者在 18 个月的随访期间未出现肿瘤复发。
