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What is Moth eaten bone is ? and explain in detail?
Ans. is 'b' i.e., Multiple myeloma Patterns of bone destruction present in a lytic lesion ? Geographic : Sharp clearly defined margins. Less aggressive, benign. Eg: non ossifying fibroma, chondromyxoid fibroma, eosinophilic granuloma. Moth eaten appearance : Holes in destroyed bone. Rapid growth, malignant Eg: Myeloma, metastasis, lymphoma. Permeative : Ill defined, diffuse, somewhat subtle destructive process of bone. Eg: Lymphoma, leukemia, Ewing's sarcoma, osteomyelitis.