A vertex presentation is the ideal situation for a vaginal birth, although occiput posterior positions tend to proceed more slowly, often requiring intervention in the form of forceps, vacuum extraction, or Cesarean section. In a large study, a majority of brow presentations were delivered by Cesarean section, however, because of postmaturity, factors other than labour dynamics may have played a role. Most face presentations can be delivered vaginally as long as the chin is anterior; there is no increase in fetal or maternal mortality. Mento-posterior positions cannot be delivered vaginally in most cases (unless rotated) and are candidates for Cesarean section in contemporary management. References


== External links ==
Nevus lipomatosus (cutaneous) superficialis (NLS or NLCS, also known as "Nevus lipomatosis of Hoffman and Zurhelle") is characterized by soft, yellowish papules or cerebriform plaques, usually of the buttock or thigh, less often of the ear or scalp, with a wrinkled rather than warty surface. : 625  It is usually congenital
in origin or appears within the first three decades.A pedunculated lipofibroma is a solitary variant of nevus lipomatosus superficialis. It usually appears in adult life, and usually on the axilla, knee, ear, arm, scalp and the lower trunk. In both multiple and solitary variants, the histopathology shows variable amounts of mature lipocytes within the dermis. Occasionally, there is an excessive fibrocollagenous tissue proliferation. The main differential diagnoses are acrochordon, seborrheic keratosis, intradermal melanocytic nevi, neurofibromas, verrucae and fibroepithelioma of Pinkus. See also
Skin lesion
List of cutaneous conditions


== References ==