Although achalasia of the oesophagus is a rare condition in pregnancy it is frequently associated with serious maternal complications and a p r fetal prognosis. We add 2 such cases to the 8 others reported, and review the literature. It is our opinion that oesophagomyotomy is the treatment of choice for this condition; it should be employed early in the course of the disease before it has reached an advanced state when there is danger to mother and child.