PT  - JOURNAL ARTICLE
AU  - Ryan D Slauer
AU  - Ahmad Mourad
AU  - Govind Krishnan
AU  - Colby Feeney
TI  - <em>Mycoplasma pneumoniae</em>-associated diffuse alveolar haemorrhage: an atypical presentation of a prevalent pathogen
AID  - 10.1136/bcr-2021-248273
DP  - 2022 Apr 01
TA  - BMJ Case Reports
PG  - e248273
VI  - 15
IP  - 4
4099  - http://casereports.bmj.com/content/15/4/e248273.short
4100  - http://casereports.bmj.com/content/15/4/e248273.full
SO  - BMJ Case Reports2022 Apr 01; 15
AB  - A transgender man in his late teens presented with signs of multisystem disease, including hepatitis, mucositis and bone marrow suppression. He later developed dyspnoea, leucocytosis and bilateral pulmonary infiltrates on chest radiograph. He was treated for community-acquired pneumonia. After several days of treatment, he developed hypoxaemic respiratory failure due to bronchoscopy-confirmed diffuse alveolar haemorrhage (DAH). The differential diagnosis and workup were extensive, and he was ultimately treated with intravenous steroids and five sessions of plasmapheresis for a presumed autoimmune aetiology. Investigations were remarkable only for elevated IgM and IgG to Mycoplasma pneumoniae (MP). This case represents a rare presentation of multisystem disease secondary to MP in adults. Clinicians should consider Mycoplasma infection in cases of multisystem disease and observe for DAH even after initiation of appropriate therapy.