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What is Patient presenting with marked loin pain, tenderness and pyrexia shows nonspecific findings on IVP but on US reveals a heterogeneous mass with posterior acoustic enhancement and central necrosis and internal debris. CT shows marginal enhancement with air densities within. The likely diagnosis is: and explain in detail?
Renal abscess Presence of air, rim enhancement on CT and posterio acoustic enhancement in a focal mass with acute clinical history is suggestive of an abscess.