21. A mosaic pattern of lamellar bone, seen in the sclerotic bone, is the hallmark and pathognomonic of (A) Osteoporosis (B) Paget disease (Osteitis deformans) (C) Rickets (D) Osteomalacia (E) Osteosarcoma

1. Malignant tumors are characterized by the following findings, except (A) Tumors remain localized, will not spread to other sites, and are amenable to local surgical removal (B) Tumors can invade and destroy adjacent structures and spread to distant sites (metastasize) to cause death (C) Lack of differentiation (D) Pleomorphism (E) Mitoses

21. A mosaic pattern of lamellar bone, seen in the sclerotic bone, is the hallmark and pathognomonic of
(A) Osteoporosis
(B) Paget disease (Osteitis deformans)
(C) Rickets
(D) Osteomalacia
(E) Osteosarcoma

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