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1. 潜在性脊椎閉鎖不全症：病因およびタイプclosed spinal dysraphism pathogenesis and types [show details]
…of development of the human nervous system starts with the formation of the notochord on day 17 of gestation. The notochord then secretes signaling molecules, such as the Sonic hedgehog (SHH) protein, …
2. 潜在性脊椎閉鎖不全症：臨床症状、診断、およびマネージメントclosed spinal dysraphism clinical manifestations diagnosis and management [show details]
…the developmental stage at which they are thought to arise: Anomalies of notochord development : Neurenteric cysts; Split notochord syndrome; Split spinal cord malformation; Sacral meningeal cysts or sacral…
3. 脊髄腫瘍spinal cord tumors [show details]
… frequently recur, and are relatively radioresistant The tumors are remnants of the primitive notochord and may occur at the skull base (35 percent); cervical, thoracic, and lumbar spine (15 percent);…
4. 頭蓋底の脊索腫および軟骨肉腫chordoma and chondrosarcoma of the skull base [show details]
…rare, slow-growing, locally aggressive neoplasms of bone that arise from embryonic remnants of the notochord. These tumors typically occur in the axial skeleton and are most common in the sphenooccipital region …
5. 下顎、口、口腔、および咽頭の先天異常congenital anomalies of the jaw mouth oral cavity and pharynx [show details]
…thought to arise from obstruction at the Thornwaldt bursa, at the junction of the remnants of the notochord and the pharyngeal ectoderm Thornwaldt cysts must be differentiated from nasopharyngeal encephaloceles…