Which or face presentation?
Fetal factors anencephaly and iniencephaly Cord around the neck Tumours of neck like congenital goitre Spasm of sternocleidomastoid muscle Dolicocephalic head (refer pgno:370 Sheila textbook of obstetrics 2 nd edition)
Anencephaly
Contracted pelvis
Placenta prae
Thyroid swelling
Abnormal labor