Botryomycosis is a bacterial infection that can rarely involve the lung. It may be misdiagnosed as cancer.
Features of botryomycosis:
(1) There is a chronic pulmonary nodule.
(2) Small granules are often visible that consist of bacteria in a hyaline matrix (Splendore-Hoeppli phenomenon).
(3) It may be associated with a single bacterial species but often there is a mixed infection.
The diagnosis involves identification of the bacteria and exclusion of conditions in the differential diagnosis.
Exclusion:
(1) Actinomycosis or Nocardia (may be termed pulmonary mycetoma)
(2) fungal infection
(3) mycobacterial infection
(4) cancer
(5) lung abscess
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Specialty: Infectious Diseases
ICD-10: ,
