Valvulae conniventes are seen in
The valvulae conniventes, also known as Kerckring folds or plicae circulares, are the mucosal folds of the small intestine, staing from the second pa of the duodenum, they are large and thick at the jejunum and considerably decrease in size distally in the ileum to disappear entirely in the distal ileal bowel loops. p Ref - radiopedia.org
Jejunum
Ileum
Stomach
Colon
Abdomen and pelvis