Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松骨瘤，不像外生骨疣，是一个外耳道较少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

血-骨髓位于长骨髓腔和松质骨间隙内，骨髓血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松骨瘤，不像生骨疣，是一个较少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松质骨间隙内，骨髓通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松瘤，不像外生疣，是一个外耳道较少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-位于长腔和松质间隙，通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松瘤，不像外生疣，是一个外耳道较少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-髓位髓腔和松质间隙内，髓通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏骨瘤，不像外生骨疣，是一个外耳道较少见病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓质骨间隙内，骨髓通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单性疏松骨瘤，不像外生骨疣，外耳道较少见病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松骨间隙内，骨髓通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松瘤，不像外生疣，是一个外耳道较少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造-位于长腔和松质间隙内，通过造作用产生细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松骨瘤，不像外生骨疣，是一个外少见的病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-骨髓位于长骨髓腔和松质骨间隙内，骨髓通过造血作用产生血细胞。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单性疏松瘤，不像外生，个外耳道较少见病灶。

Blood production —The marrow, located within the medullary cavity of long bones and the interstices of cancellous bone, produces blood cells in a process called haematopoiesis.

造血-髓位于长髓腔和松质间隙内，髓通过造血作用产生血细胞。