The Collaborative International Dictionary of English v.0.48:
Vesiculitis \Ve*sic`u*li"tis\, n. [NL.; vesicula + -itis.] Inflammation of a vesicle. [Webster 1913 Suppl.] VesiculoseWordNet (r) 3.0 (2006):
vesiculitis n 1: inflammation of a seminal vesicle (usually in conjunction with prostatitis)