Intravascular Large B-Cell Lymphoma Presenting With Urinary and Fecal Incontinence: A Case Report.

Intravascular large B-cell lymphoma (IVLBCL) can present with neurological symptoms such as urinary and fecal incontinence. A failure to recognize this association may delay the diagnosis, especially as imaging does not always reveal lesions. Clinicians must maintain a high index of suspicion for IVLBCL in patients with unexplained neurological symptoms, persistent fever, and elevated interleukin-10, even when imaging is non-specific. Early biopsy and multidisciplinary evaluation are essential for timely diagnosis and management.