RT Journal Article SR Electronic T1 A lump in the umbilicus JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 270 OP 270 DO 10.3949/ccjm.82a.13164 VO 82 IS 5 A1 Hadi Mirfazaelian A1 Ahmad Mosalei A1 Yahya Daneshbod A1 Shahrzad Negahban A1 Azita Aledavood YR 2015 UL http://www.ccjm.org/content/82/5/270.abstract AB