Thrombosis in the leg could indicate cancer. Thrombotic clots are among the most common and dangerous complications for cancer patients.

Cancers change the composition of the blood and thus increase the risk of blood clots. The type of cancer also has a significant influence on the frequency of venous thromboses. The resulting blood clot, which obstructs blood flow, can cause the following symptoms: Cramp-like pain, similar to a sore muscle. Shiny blue-reddish skin in the affected area with prominent veins swelling.