Osteopenia (from the Greek. osteon - bone and poikilos - spotted) - congenital systemic feature of the bone structure, characterized by the presence of dense islets in her spongy substance. Osteopenia is rare; in men more often than women. Histologically dense Islands formed densely interwoven rungs cancellous bone. Changing patterns in the form of round or oval thick homogeneous islets in the amount from 2 to 8 mm) are found in almost all the bones of the skeleton; often affects short spongy bones of the wrist and Tarsus, the epiphysis and metaphysi upper and lower extremities (mainly of the head and neck of femur and humerus), the phalanges of the feet and hands, wrist and metacarpal bones. Dense Islands give the affected bones kind of spotty because of more or less dense seal areas of bone structure. Osteopenia asymptomatic and can be detected only as an accidental discovery by x-ray. A typical x-ray picture is usually excludes differential diagnostic difficulties. Similar changes can be observed only when the epiphyseal point dysplasia, which is characterized by a specific clinical picture and unique localization bone changes. Cm. the Bone.