In the renal sinus, there are 7 to 8 funnel-shaped calyces that encircle the renal papillae, 2 to 3 calyces that form a large calyx, and 2 to 3 large calyces that converge to form a flattened, funnel-shaped renal pelvis. Blunted renal calyces refer to the blunted anterior and posterior flattened, funnel-shaped shape of the renal calyces due to some organic condition. So, what diet is suitable for patients with blunted renal calyces? Suitable diet: 1. high-calorie and low-protein food; 2. dietary fiber-rich food; 3. food rich in high-quality protein.