Bone or cartilage mass evaluation

Bone or Cartilage Mass Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]

Overview

The evaluation of bone and cartilage masses plays an important role in methodical diagnosis of bone and cartilage tumors. Bone and cartilage tumors must be differentiated from other tumors that cause similar imaging features.

Bone or Cartilage Mass Evaluation

The algorithm below summarizes the initial bone and cartilage mass evaluation that differentiate bone and cartilage tumors according to detailed history, age, and morphology of the lesion.

Pediatric Bone or Cartilage Mass Evaluation

Initial patients evaluation

History and Symptoms ❑ Pain ❑ Response to analgesics Physical examination Age

Imaging

1) Conventional radiography ❑ What type of bone is involved? ❑ Location of the lesion ❑ Morphology of the lesion ❑ Type of calcified matrix involved ❑ Size 2) CT/MRI scan

> 30 years Adults

< 30 years Children and adolescents

See adult evaluation of bone and cartilage mass

Lesion characteristics

Well-defined

Ill-defined lesions

Sclerotic lesions

❑ Chondroblastoma ❑ Fibrous dysplasia ❑ Aneurysmal bone cyst ❑ Simple bone cyst ❑ Non ossifying fibroma ❑ Chondromyxoid fibroma ❑ Infection

❑ Ewing tumor ❑ Eosinophilic granuloma ❑ Osteosarcoma ❑ Infection

❑ Osteosarcoma ❑ Osteoid osteoma ❑ Fibrous dysplasia ❑ Eosinophilic granuloma ❑ Infection