Other benign tumors are osteoblastomas and osteoid osteomas, both of which arise from osteoblasts.

其他良性肿瘤包括成骨细胞瘤、骨样骨瘤，两者均起源于成骨细胞。

In osteoid osteomas, the nidi are smaller than 1.5cm in diameter and are often surrounded by a ring of sclerotic bone tissue.

在骨样骨瘤中，癌巢直径通常小于1.5cm，并且通常被硬化的骨组织包围（边缘硬化）。

Some unique symptoms are that the pain of osteoid osteoma typically gets worse at night, while osteochondromas and osteoblastomas sometimes press against spinal nerves, causing numbness and limb weakness.

一些独特的症状如骨样骨瘤的疼痛通常会在夜间加剧，而骨软骨瘤、成骨细胞瘤有时会压迫脊神经，引起麻木和四肢无力。