What is often the first sign of renal thrombosis?

Hematuria, or the presence of blood in the urine, is often the first sign of renal thrombosis. This occurs because renal thrombosis can lead to ischemia and damage to the renal capillaries, resulting in bleeding into the urinary tract. The released blood from the damaged capillaries can be observed during urination, manifesting as hematuria.

This symptom is critical to recognize, as it may prompt further evaluation and intervention. Understanding that hematuria can indicate underlying renal vascular issues, clinicians can implement necessary diagnostic processes, such as imaging studies or laboratory tests, to address potential complications early on. In contrast, while symptoms like swelling of the lower limbs, increased urination, or abdominal pain may also be associated with renal issues, they are not as directly correlated with renal thrombosis as hematuria is.