How many letters does the top answer for “inflammation of a blood vessel” have?

The most common answer is vasculitis (10 letters).

Crossword clue: inflammation of a blood vessel

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

vasculitis 10 letters wn-def

inflammation of a blood vessel

inflammation of a lymph vessel 50% similar → lymphangitis

inflammation of the lymphatic vessels. 50% similar → lymphangeitis

relating to the blood vessels or blood 50% similar → haemal, haematal, hemal