A newborn's head is of dolichocephalic shape, that is front-to-back elongated. Examination of the occipital region revealed a labour tumour located in the middle between the prefontanel and posterior fontanel. Specify the type of fetal presentation:

Answer options

1. Posterior vertex presentation
2. Presentation of the bregma
3. Face presentation
4. Brow presentation
5. Anterior vertex presentation

Explanation

A cephalic presentation is a situation at childbirth where the fetus is in a longitudinal lie and the head enters the pelvic first. The most common form of cephalic presentation is the vertex presentation where the occiput is the leading part. All other presentations are abnormal. Vertex presentation is classified according to the position of the occiput. We have: Left Occiput Anterior (LOA), Left Occiput Posterior (LOP), Left Occiput Transverse (LOT). The same is for the right and hence ROA, ROP, and ROT. In our question, this is posterior vertex presentation.