“…21 In addition to the breast, distal catheters have migrated to the lateral ventricles, scalp, oral cavity, pulmonary artery, lung parenchyma, bronchial tree, heart, neck, chest wall, diaphragm, umbilicus, abdominal wall, intestines, gallbladder, vagina, scrotum, and anus. 4,5,8,13,17,19,38,39 A myriad of hypotheses have been proposed to explain catheter migration and coiling, including vigorous manipulation of the breast, traction on the catheter by the breast implant capsule, 21 increased intraabdominal pressure (from cough, strain, exercise, constipation, or abdominal pseudocyst), 4 a calcified part of the catheter acting as an anchoring point to the abdominal wall, vigorous rotation or flexion-extension movements of the head, and retained memory of the shunt material for its coiled shape in its original packaging. 6,38 Breast implant rotation likely contributes to the wrapping of the catheter around the implant itself.…”