Shunt Nephritis: An Increasingly Unfamiliar Diagnosis.

Area of Science:

• Nephrology
• Infectious Diseases
• Neurosurgery

Background:

• Shunt nephritis is a rare, immune-complex mediated kidney disease.
• It is a complication of cerebrospinal fluid (CSF) shunt infection.
• Delayed diagnosis can lead to end-stage renal disease or death.

Purpose of the Study:

• To report a case of shunt nephritis.
• To highlight diagnostic challenges and clinical course.
• To emphasize the importance of high clinical suspicion.

Main Methods:

• Case report of a 50-year-old patient with a 30-year-old ventriculojugular shunt.
• Presentation with nephrotic syndrome symptoms.
• Diagnosis delayed by negative initial CSF and blood cultures; later CSF culture positive for Propionibacterium acnes.

Main Results:

• Nephritic symptoms resolved after intravenous antibiotics and shunt replacement (ventriculoperitoneal).
• Patient maintained reduced kidney function (Stage IIIa chronic kidney disease).
• Successful treatment of shunt nephritis despite delayed diagnosis.

Conclusions:

• High index of suspicion is vital for patients with ventricular shunts presenting with nephritis symptoms.
• Consider shunt nephritis even with negative cultures.
• Prompt diagnosis and treatment can prevent progression to severe kidney disease.