236   Histoplasmosis Chadi A. Hage, L. Joseph Wheat ETIOLOGY Histoplasma capsulatum, a thermal dimorphic fungus, is the etiologic agent of histoplasmosis. In most endemic areas, H. capsulatum var. capsulatum is…

PYROGENS The term pyrogen (Greek pyro, “fire”) is used to describe any substance that causes fever. Exogenous pyrogens are derived from outside the patient; most are microbial products, microbial toxins,…

247   Amebiasis and Infection with Free-Living Amebas Rosa M. Andrade, Sharon L. Reed AMEBIASIS DEFINITION Amebiasis is an infection with the intestinal protozoan Entamoeba histolytica. About 90% of infections are…

Tularemia is a zoonosis caused by Francisella tularensis. Humans of any age, sex, or race are universally susceptible to this systemic infection. Tularemia is primarily a disease of wild animals…

236   Histoplasmosis Chadi A. Hage, L. Joseph Wheat ETIOLOGY Histoplasma capsulatum, a thermal dimorphic fungus, is the etiologic agent of histoplasmosis. In most endemic areas, H. capsulatum var. capsulatum is…

     I. Mucocutaneous HSV infections          A. Infections in immunosuppressed patients              1. Acute symptomatic first or recurrent episodes: IV acyclovir (5 mg/kg q8h) or oral acyclovir (400 mg qid), famciclovir (500 mg…

     I. Mucocutaneous HSV infections          A. Infections in immunosuppressed patients              1. Acute symptomatic first or recurrent episodes: IV acyclovir (5 mg/kg q8h) or oral acyclovir (400 mg qid), famciclovir (500 mg…

Etiology     In at least 90% of patients with Cushing’s disease, ACTH excess is caused by a corticotrope pituitary microadenoma, often only a few millimeters in diameter. Pituitary macroadenomas (i.e., tumors >1…

Etiology     In at least 90% of patients with Cushing’s disease, ACTH excess is caused by a corticotrope pituitary microadenoma, often only a few millimeters in diameter. Pituitary macroadenomas (i.e., tumors >1…

Etiology     In at least 90% of patients with Cushing’s disease, ACTH excess is caused by a corticotrope pituitary microadenoma, often only a few millimeters in diameter. Pituitary macroadenomas (i.e., tumors >1…