Systematic Approach to Tumors and Focal Lesions of Bone

摘要: Bone neoplasms consist of mesenchymal tumors, hematopoietic and metastasis from mainly epithelial carcinomas. Also non-neoplastic bone lesions that mimic true including cysts Langerhans cell histiocytosis, need to be included in the differential diagnosis. Classic analyses on tumor margin, mineralized matrix, periosteal reaction, based plain radiography, are important for diagnoses. CT provides greater morphological detail about surrounding a lesion, similar analysis can applied same way as classic radiographic margin analysis. MR imaging is particularly useful preoperative staging extent involvement critical tissues such joints, nearby neurovascular bundles, muscles. In addition, it evaluate aggressive lesions, with transcortical infiltration, sign highly intertrabecular focal infiltrative growth seen malignant tumors. An “Aunt Minnie” approach often works, but radiologists have non-specific or atypical systematically.