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The acute phase of histoplasmosis is characterized by nonspecific respiratory symptoms, often cough or flu-like. Chest X-ray findings are normal in 40–70% of cases. [8] Chronic histoplasmosis cases can resemble tuberculosis; [9] [10] disseminated histoplasmosis affects multiple organ systems and is fatal unless treated. [11]
Histoplasma capsulatum is a species of dimorphic fungus.Its sexual form is called Ajellomyces capsulatus.It can cause pulmonary and disseminated histoplasmosis.. Histoplasma capsulatum is "distributed worldwide, except in Antarctica, but most often associated with river valleys" [1] and occurs chiefly in the "Central and Eastern United States" [2] followed by "Central and South America, and ...
[1] [7] Systemic fungal infections are more serious and include cryptococcosis, histoplasmosis, pneumocystis pneumonia, aspergillosis and mucormycosis. [3] Signs and symptoms range widely. [3] There is usually a rash with superficial infection. [2] Fungal infection within the skin or under the skin may present with a lump and skin changes. [3]
Primary pulmonary histoplasmosis is caused by inhalation of Histoplasma capsulatum spores, and approximately 10% of people with this acute infection develop erythema nodosum. [ 1 ] : 316 See also
Histoplasma species have two forms: their environmental form is hyphal with microconidia and tuberculate macroconidia while their pathogenic form is a small intracellular yeast that exhibits narrow-necked budding [3] and no capsule.
Blastomycosis, also known as Gilchrist's disease, is a fungal infection, typically of the lungs, which can spread to brain, stomach, intestine and skin, where it appears as crusting purplish warty plaques with a roundish bumpy edge and central depression.
P. jirovecii is commonly believed to be a commensal organism (dependent upon its human host for survival). The possibility of person-to-person transmission has recently gained credence, with supporting evidence coming from many different genotyping studies of P. jirovecii isolates from human lung tissue.
Date: 8 May 2023, 20:15:28: Source: Own work: Author: Mikael Häggström, M.D. Author info - Reusing images - Conflicts of interest: None Mikael Häggström, M.D. Consent note: Consent from the patient or patient's relatives is regarded as redundant, because of absence of identifiable features (List of HIPAA identifiers) in the media and case information (See also HIPAA case reports guidance).