Perianal Vein Thrombosis
Synonyms: Perianal Thrombosis, AnalthrombosisIn perianal vein thrombosis a blood clot (thrombus) is formed in the superficial veins at the edge of the anus, which manifests itself as a bluish knot. The causes for the development of thrombosis can be varied, but those affected also complain of severe pain. In general, perianal vein thrombosis is harmless, … Perianal Vein Thrombosis