A child presents with blue marks on the sclera, short stature and heart murmur. What is the diagnosis?

The key is A. Osteogenesis imperfecta. [Osteogenesis imperfecta (OI), also known as brittle bone disease, is a group of genetic disorders that mainly affect the bones. It results in bones that break easily. OI may have joint hyperlaxity; muscle weakness; chronic, unremitting bone pain; and skull deformities (eg, posterior flattening) due to bone fragility during infancy. Limb shortening and progressive deformities can occur, and patients have a triangular face with frontal and temporal bossing; malocclusion is common. The sclera have variable hues commonly blue].