“…The prevalence of recurrent hyperthyroidism after subtotal thyroidectomy for Graves's disease varies considerably in different centres, but it is invariably less than 30 %, even when a large remnant of thyroid tissue is left (Table I) Thomson et al (1930) Clute and Veall (1932) Enzel (1932). Gilette (1937) Rasmussen (1937) Cattell (1949 Crile and McCullagh (1951) Hayles et al (1959) Riddell (1962) Roy et al (1967) Hedley et al (1970a Prevalence of Recurrent Hyperthyroidism (,') 6-7 19-5 6-2 27-9 6-5 20-7 2-4 15-0 179 3-3 11-0 6-0 evidence that radical resection results in a higher incidence of postoperative hypothyroidism, but does not prevent recurrence of hyperthyroidism in a small group of patients; furthermore, hyperthyroidism may recur despite multiple thyroidectomies (McLarty et al, 1969;Hedley et al, 1970a).…”