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

其他良性肿瘤包括成细胞瘤、瘤，两者均起源于成细胞。

In comparison, osteoid osteomas typically affect the diaphysis of long bones like the tibia, and don't usually erode the surrounding bone.

相比之，瘤通常影响干，例如胫，一般不侵蚀周围骼。

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

在瘤中，癌巢直径通常小于1.5cm，通常被硬化的组织包围（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.

一些独特的症状如瘤的疼痛通常会在夜间加剧，而软瘤、成细胞瘤有时会压迫脊神经，引起麻木和四肢无力。