How many letters does the top answer for “benign angioma consisting of a mass of blood vessels; some appear as birthmarks” have?

The most common answer is haemangioma (11 letters).

Crossword clue: benign angioma consisting of a mass of blood vessels; some appear as birthmarks

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

haemangioma 11 letters wn-def

benign angioma consisting of a mass of blood vessels; some appear as birthmarks

hemangioma 10 letters wn-def

benign angioma consisting of a mass of blood vessels; some appear as birthmarks