"MOST COMMON" FACTS -

MC invasive gynecologic malignancy : Endometrial malignancy
MC islet cell tumor in MEN 1 : Gastrinoma
MC islet cell tumor of the pancreas : Insulinoma.
MC joint involved in synovial osteochondromatosis : Knee
MC lesion to cause expansion of paranasal sinus : Mucocele
MC lethal bone dysplasia : Osteogenesis imperfecta
MC lobe affected in bronchial atresia : Left upper lobe.
MC location for a cephalhematoma : Parietal
MC location for a gastric diverticulum : Posterior wall of the gastric fundus.
MC location for a pilocytic astrocytoma : Cerebellum
MC location for a solitary myeloma of the bone : Spine
MC location for a synovial sarcoma : Knee