<prompt> Most common type of hiatus hernia:SlidingRollingMixedNone  <response>: Ans. a SlidingRef: Bailey and Love 27h Edition, Page 1083Sliding hiatus hernia in which OG junction enters the mediastinum via the wide hiatus, Type 1: Sliding Most common--70 Type 2: ParaesophagealRolling hernia Type 3: Mixed Type 4: Along with stomach, other structures like colon, spleen, pancreas or small bowel migrate into mediastinum. 