fˌɪbɹoʊlɐstˈoʊsɪs ɪz stɹˈɔŋli sˈiːn æz ɐ pɹˈaɪmɚɹi kˈɔːz ʌv ɹᵻstɹˈɪktɪv kˌɑːɹdɪˌoʊmɪˈɑːpəθi ɪn tʃˈɪldɹən, ɐlˈɔŋ wɪð kˈɑːɹdiˌæk ˌæmɪlɔɪdˈoʊsɪs, wˌɪtʃ ɪz mˈoːɹ kˈɑːmənli sˈiːn ɪn pɹəɡɹˈɛsɪv mˌʌltɪpəl mˌaɪɪlˈoʊmə pˈeɪʃənts ænd ðɪ ˈɛldɚli.
Fibroelastosis is strongly seen as a primary cause of restrictive cardiomyopathy in children, along with cardiac amyloidosis, which is more commonly seen in progressive multiple myeloma patients and the elderly.