A lady Dimple has a lytic lesion in X-Ray of upper end of humerus. The diagnosis is,: (A) Osteosarcoma, (B) Osteochondroma, (C) Unicarmel bone cyst, (D) Osteoclastoma
Answer is C. C i.e. Unicameral bone cyst Simple/Solitary/Unicameral Bone cyst nearly always occurs during first two decades of life, mostly in metaphysis of proximal humerus (50%) or femur with a male predominance (Male-female ratio = 2:1).