4 Cases of Duchenne type of Progressive Muscular Dystrophy

4 cases of Duchenne type of Muscular Dystrophy have been experienced in brothers of 6 years old boy, 8 years old boy whose limb girdle was involved, brothers of 9 years old boy and other brothers of 9 years old boy. Ina all cases, serum CPK levels were significantly increased and typical waddling gait and Gower's sigh were noticed. The muscle biopsy findings and electromygraphic findings were also compatible with progressive muscular dystrophy.We report with brief review of literatures.