[Perinephretic phlegmon of pseudotumor form]

Area of Science:

• Urology
• Radiology
• Infectious Diseases

Background:

• Perinephric phlegmon is a rare retroperitoneal infection.
• It can present insidiously and mimic other retroperitoneal pathologies.

Observation:

• A case is presented where perinephric phlegmon simulated a renal or adrenal tumor.
• Initial imaging with ultrasound and computed tomography (CT) failed to establish a definitive diagnosis.

Findings:

• The correct diagnosis was only achieved after surgical intervention.
• Incision and drainage of purulent material confirmed the presence of phlegmon.

Implications:

• This case highlights the diagnostic challenges posed by perinephric phlegmon.
• It underscores the importance of considering infectious etiologies in retroperitoneal masses, even when imaging suggests malignancy.
• Surgical exploration may be necessary for definitive diagnosis and management.