1. Mannix and Dennis;Levy;Genecin; Shumacker and Harris,1952
2. The association of obscure pericardial effusions with hypertension was first noted by Wood in 1956, and it is of interest that several of the cases reported elsewhere have demonstrated the association, though this aspect has not been stressed. Excluding the 6 cases cited by Wood, there have been 9 with chronic pericardial effusion of unknown itiology and hypertension out of 40 reported cases with adequate investigation and blood pressure records (see Table II),1)
3. Possible factors in the etiology of chronic idiopathic pericardial effusion have been discussed. No evidence of auto-immune pathology could be demonstrated in the present cases. The first patient has hypertension and the association of hypertension with chronic pericardial effusion of unknown xtiology has been reported by previous authors, though this aspect has been stressed in few series. The nature of the relationship remains obscure. The second patient is an example of "cholesterol pericarditis" of unknown setiology, and extensive lipid studies on the serum and the pericardial fluid are reported. This patient has a previous history of chorea and a possible mechanism by which the chorea may be involved in the pathogenesis of the chronic effusion is suggested
4. Chronic effusive pericarditis;Bedford, D.E.;Brit. Heart. J,1964
5. Pericardial effusion. A clinical study;Camp, P.D.; White, P.D.;Amer. J. med. Sci,1932