This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Labour - II, Subject name: Gynaecology & Obstetrics
All are true about cephalhematoma except: 
Select and explain. 
A. Occurs due to subcutaneous edema, B. Seen mostly over Parietal bone, C. Treatment is conservative, D. May require blood transfusion
A: Occurs due to subcutaneous edema
Answer: A: Occurs due to subcutaneous edema 
Explanation: Cephalohematoma- These are cranial sub-periosteal hematomas They develop due to laceration of Emissary or Diploic veins Hemorrhage can be over 1 or both parietal bones It may require blood transfusion if hematoma is massive Treatment is mainly conservative.Large hematomas may require Aspiration /Surgical Intervention