A rare cause of partial intestinal obstruction in a child: colonic lithobezoar.

The accumulation of undigested foreign bodies or nutrients in the gastrointestinal tract forming a conglomeration is called a bezoar. Bezoars are referred to according to the foreign bodies that constitute their core: phytobezoar (fibres or seeds of vegetables and fruits), trichobezoar (hair), lactobezoar (remnants of milk) and lithobezoar (rock or similar substances).