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、样瘤，两源于成细胞。

Osteosarcomas arise from osteoblasts of different sizes - called pleomorphic - and these cells produce too much osteoid tissue.

肉瘤源于大小不同的成细胞（多形性）；这些细胞会产生过多的组织。

To build bone, osteoblasts secrete osteoid, which is an organic matrix made of type 1 collagen.

构建的过程中，成细胞分泌质，它是一种由1型胶原组成的有机质。

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

样瘤中，癌巢直径通常小于1.5cm，并且通常被硬化的组织包围（边缘硬化）。

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

相比之下，样瘤通常影响长干，例如胫，并且一般不侵蚀周围骼。

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.

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

Both of these tumors classically form a nidus – which is a disorganized mix of small blood vessels, tiny rods of bone called trabeculae, and unmineralized bony tissue called osteoid.

癌巢是小血管、小棒状（小梁）、未矿化（即质）等无组织的构成。