Primary follicular lymphoma of the bladder mimicking inflammatory condition: Case report and review of the literature.

Primary lymphoma of the bladder is rare and may present with nonspecific symptoms and infection. Primary follicular lymphoma of the bladder is extremely rare with only a dozen reported cases. We present one case clinically mimicking an inflammatory process. A 79 year-old woman presents with recurrent urinary tract infections, urinary incontinence and frequency. Cystoscopic examination demonstrated a raised but flat lesion, suspicious for inflammatory lesion. Biopsy revealed a diagnosis of follicular lymphoma, grade 1-2. The presentation of primary follicular lymphoma of the bladder may be nonspecific, therefore it is important to consider this diagnosis in patients with unremitting symptoms.