How many letters does the top answer for “inflammation of a fallopian tube or of a eustachian tube” have?

The most common answer is salpingitis (11 letters).

Crossword clue: inflammation of a fallopian tube or of a eustachian tube

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

salpingitis 11 letters wn-def

inflammation of a Fallopian tube or of a Eustachian tube

the eustachian tube, or the fallopian tube. 75% similar → salpinx