Thank for choosing HCM, you have described three problems altogether which are co-related with each others, Arterial fibrillation/flutter required echo study,and for liver
the MRI study would be the best choice instead of sonography
, the lymph
also needs biopsy
study, you have not told any thing about your husbands habits , we always ask for complete medical history, for provisional diagnosis and better advise, take good care of your husband, and be in touch with HCM.