What is the proper diagnosistic wording for fluid collecting between a childs lung and chest wall when my child was born he had this and i don't know the name of the condition what is it

I : I think you are referring to a "pleural effusion" which is an excess fluid collection in the layers of tissue between the lung and chest wall. Some children are born with "congenital pleural effusions" - congenital just means "present from birth". This is extremely rare, but it is definitely recognized in the medical literature. Many times the cause is unknown. Legal disclaimer: I am providing this general and basic information as a public service and my response to this question does not constitute a doctor-patient relationship. For any additional information, advice, or specific concerns, please speak with your own physician. The information provided is current as of the date of the answer entry.

Pleural effusion: This can be caused by fluid produced by the lung (many causes), lymphatic fluid (chylothorax), possibly caused by birth trauma, or blood. Your child's pediatrician can likely identify the cause.