Actinomycosis

Actinomycosis is a topic covered in the Washington Manual of Medical Therapeutics.

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General Principles

Actinomyces is a microaerophilic gram-positive bacillus that usually causes soft-tissue swelling of the oropharynx, face, or neck, typically over or underneath the mandible (orocervicofacial actinomycosis). Pulmonary and gastrointestinal disease can also be seen. Classic infections are chronic, indurated soft-tissue lesions associated with draining fistulae that pass through tissue planes. Unlike Nocardia, infection due to Actinomyces is not limited to immunocompromised hosts.

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General Principles

Actinomyces is a microaerophilic gram-positive bacillus that usually causes soft-tissue swelling of the oropharynx, face, or neck, typically over or underneath the mandible (orocervicofacial actinomycosis). Pulmonary and gastrointestinal disease can also be seen. Classic infections are chronic, indurated soft-tissue lesions associated with draining fistulae that pass through tissue planes. Unlike Nocardia, infection due to Actinomyces is not limited to immunocompromised hosts.

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