It sounds like your husband is receiving great care. I hope that spot ends up being of no concern. But like you said, if it is of concern then you’ve nabbed it early. I don’t know much about Ipi other than some folks seem to get worse before they get better on it.
Sorry to hear that his arm has begun to swell. Those night-time garments seem to help. I asked my therapist for one since I’ve developed a pocket of fluid at the elbow and because I tend to sleep with my elbow bent up under my head I didn’t want to exacerbate anything. It was a custom made garment from Solaris and this is my first week with it. Visually my elbow seems to look smaller but I’ll know more after I get measured on Friday.