Signs that accompany renal corticomedullary abscess vary greatly and are nonspecific. However, the physical examination findings usually indicate significant infection, including ill appearance, fever, and hemodynamic instability. In patients with accompanying sepsis, hemodynamic and overall instability may be more pronounced, with tachycardia, hypotension, and tachypnea. In addition, many persons with renal corticomedullary abscess have palpable masses. Seventy percent of patients with XGP have a flank mass. Costovertebral angle tenderness is almost uniformly present with each type of corticomedullary infection.
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