My sons belly button has disappeared or closed, what caused that ?
Patient: My son has colon and liver cancer and his belly button has disappeared or closed,  what caused that? Doctor: Hello  Welcome to healthcare magic. The belly button or umbilicus flattens or disappears when the abdomen is overstretched or distended due to any mass or fluid collection inside.In cancer it could be the tumour itself or the complications causing fluid collection in abdomen.It's reversible but depends on the patients condition . Hope I have answered your query. Thanks