Submitted fragment show a fibrotic cyst wall with related dense sclerotic bone and hypocellular marrow. No evidence of specific granulomas. No evidence of atypia or malignancy. Picture in correlation with simple unicameral bone cyst.
Lt. femur neck cyst.
Bone and soft tissue fragments collectively measured 3x2.5x0.7 cm, totally embedded.
Lt. femur neck cyst, biopsy: