RT Journal A1 CONRAD FG, SASLAW S, ATWELL RJ T1 THe protean manifestations of histoplasmosis as illustrated in twenty-three cases JF A.M.A. Archives of Internal Medicine JO A.M.A. Archives of Internal Medicine YR 1959 FD November 1 VO 104 IS 5 SP 692 OP 709 DO 10.1001/archinte.1959.00270110012003 UL http://dx.doi.org/10.1001/archinte.1959.00270110012003 AB The Ohio State University Hospital and the Ohio Tuberculosis Hospital are adjacent in location at the Ohio State Health Center. This arrangement has afforded the staff an excellent opportunity to study both chronic and acute pulmonary disease problems at both institutions. Of particular interest to us has been the protean manifestations of histoplasmosis. Since a previous report 1 from this institution, we have encountered 29 additional cases which required hospitalization; this is exclusive of many more seen on an outpatient basis. It is the purpose of this paper to describe 23 of these patients (6 from the Ohio Tuberculosis Hospital and 17 from University Hospital) who presented diagnostic problems with a variety of manifestations.Report of Cases  Case 1.  —A 26-year-old white man from Zanesville, Ohio, was admitted to Ohio Tuberculosis Hospital on June 5, 1952, with a one-year history of easy fatigability, weight loss, chest pain, chills, fever, a