Mycoplasma infection mimicking a malignancy in a waldenstrom macroglobulinemia patient.

BACKGROUND

Mycoplasma hominis infection is common in urinary tract. F-FDG-PET/CT is a valuable tool for tumor and infection diagnosis. Few studies have shown the F-FDG-PET/CT images after mycoplasma infection.

CASE PRESENTATION

Here we described a case of Waldenstrom macroglobulinemia with thickened bladder wall. The F-FDG-PET/CT showed the SUVmax up to 36.1 mimicking bladder cancer. The results of histopathological examination and metagenomic sequencing of the blood and urinary revealed the Mycoplasma hominis infection.

CONCLUSION

The full consideration should be given to the possibility of infection besides tumor in lesions with high SUV value in F-FDG-PET/CT, especially in immunodeficiency patients.