Case Report

A Rare Case of Cavitary Lesion of the Lung Caused by Mycoplasma pneumoniae in an Immunocompetent Patient

Table 1

Pertinent laboratory findings.

Serum anti-RSV IgM0.64
Serum anti-RSV IgG1.4
Nasal influenza A/B swabNegative
Anti-ribosomal P antibodyNegative
Anti-nuclear antibodyNegative
Anti-DNA antibodyNegative
Smooth muscle antibodyNegative
Anti-scleroderma 70 antibodyNegative
MyeloperoxidaseNegative
Proteinase 3 antibodyNegative
Cold agglutinin antibodyNegative
Rheumatoid factorNegative
Anti-cyclic citrullinated antibodyNegative
HIVNegative
Chlamydiapneumoniae IgM<1 : 20
Chlamydial pneumonia IgG<1 : 64
Legionella antigen, urineNegative
Histoplasma antigen, urineNegative
Blood, urine, and respiratory cultureNegative
BAL cultures and acid fast bacilli stainsNegative
Cryoglobulin levelNegative
M. pneumoniae IgM antibody titer1 : 1,280
Cold agglutinin titer1 : 320