“…While paroxysmal hypertension with vasomotor instability, or sustained hypertension, may suggest the diagnosis, less familiar features may distort the picture. Those recorded include paroxysmal hypotension (Gjol, Dybkaer & Funder, 1957;Richmond, Frazer & Millar, 1961;Hamrin, 1962;Leather et al, 1962), a typical hyperthyroidism (Davies, 1952), glycosuria, or even diabetes mellitus (Freedman et al, 1958) and urinary retention (Barnet et al, 1950;Baird & Cohen, 1954). There is a well-documented association with thyroid carcinoma (Williams, 1965) and with neurofibromatosis (Glushien, Mansuy & Littman, 1953 Seward, 1954) and from cardiac arrhythmia (Durant & Soloff, 1962).…”