The patient is a male, 6 weeks old. After birth, it was found that the anteroposterior diameter of the skull was larger and the transverse diameter was smaller. Physical examination and X-ray examination: the sagittal suture is closed.

Answer: A

Scaphocephaly is also called dolichocephaly. Early closure of the sagittal suture alone is the most common cranial malformation causing craniosynostosis, accounting for about 40% of cases. %~70%. Premature closure of the sagittal suture restricts lateral head development, that is, it expands forward and backward. As a result, the cranial vault is elongated front and back, and the left and right narrowing causes the skull to appear saddle-shaped. The occiput and forehead are excessively bulging, and the frontal bone can be positioned very high. Pear-shaped forehead due to narrowing of the temporal fossae.

Because one or more sutures close prematurely, which can lead to skull deformation and neurological dysfunction, surgery is the only treatment. The purpose of the surgery is to reopen the cranial sutures, expand the cranial cavity, remove factors that limit brain development, prevent increases in intracranial pressure, and improve the appearance of the skull and face.

Surgery performed within 6 months has the best results.