CASE REPORTS
Adiaspiromycosis mimicking widespread malignancy in a patient with pulmonary adenocarcinoma
1 Department of Histopathology, Plymouth Hospitals NHS Trust, Crownhill, Plymouth, Devon, UK
2 Department of Histopathology, Royal Devon and Exeter Foundation NHS Trust, Exeter, Devon, UK
3 Department of Thoracic and Upper GI Surgery, Royal Devon and Exeter Foundation NHS Trust, Exeter, Devon, UK
4 Exeter Oncology Center, Royal Devon and Exeter Foundation NHS Trust, Exeter, Devon, UK
5 HPA Mycology Reference Laboratory, Bristol, UK
Correspondence to:
Correspondence to Dr Jemimah L Denson, Department of Histopathology, Plymouth Hospitals NHS Trust, Derriford Road, Crownhill, Plymouth, Devon PL6 8DH, UK; jem_denson{at}yahoo.co.uk
Adiaspiromycosis, a mycotic disease of small animals, has rarely been reported in humans. The principle causative organism in Europe is Emmonsia crescens. Inhaled, dust-borne spores of E crescens fail to germinate in host tissue, instead increasing in size dramatically to become thick-walled, round adiapsores, which induce a granulomatous response. The pathological effects depend on the spore burden and host immunocompetence, and range from asymptomatic infection through to necrogranulomatous pneumonia, respiratory failure and, rarely, death. Diagnosis is principally made through histological examination. This report describes a case of a patient with low-grade, localised pulmonary adenocarcinoma with occult adiaspiromycosis that radiologically mimicked widespread malignancy. It is believed to be the first reported human case of adiaspiromycosis in the UK.
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