We had a teen swallow a coin cell and it was allowed to pass. The biggest factors for retrieval seem to be size, a small child may have the object stick, and th

We had a teen swallow a coin cell and it was allowed to pass. The biggest factors for retrieval seem to be size, a small child may have the object stick, and then if the battery ruptures. The ER doctors seemed satisfied it hadn't done so, and sent us on our way.