dorsal surface of the brain stem rhomboid fossa菱形窝 Boundaries Superolateral: superior cerebellar peduncle 小脑上脚 Inferolateral gracile tubercles薄束结节 cuneate tubercles楔束结节 inferior cerebellar peduncle 小脑下脚 Lateral recess外侧隐窝Inferolateral: gracile tubercles 薄束结节 cuneate tubercles 楔束结节 inferior cerebellar peduncle 小脑下脚 Boundaries rhomboid fossa 菱形窝 Superolateral: superior cerebellar peduncle 小脑上脚 Lateral recess 外侧隐窝 dorsal surface of the brain stem