Asymptomatic soft lump on anterior wall of vagina

Dear Ask The Doctor: I'm female, 25, and recently noticed a squishy blue purple lump about the size of a quarter on the anterior wall of my vagina. it's low enough that i can just see it when wrap my finger around it and push it down. it feels uncomfortable to really squish it around, but other than that is asymptomatic, even during sex. it appears to have an opening so i am wondering if it's a swollen gland, but it doesn't seem to be in the right place for a Bartholin gland or Skete's duct. i have had a bladder infection recently that is now gone, so i thought maybe urethral diverticula, but that doesn't seem to fit with the opening and bluish purple color, plus i don't have any of the symptoms... it's quite alarming to look at, i am not sure when i got it, my best guess is maybe a few months ago.. my cycle is very regular, not on birth control, healthy weight.. any ideas?

Dear Jenny: It is most probable that you have a vaginal inclusion cyst. These cysts are caused as a result of trauma to the area or following a gynecological procedure. The cysts do not cause symptoms and presents as a soft lump that protrudes from the vagina.  I would suggest that you see your doctor for further evaluation of the lump. In certain cases biopsy may be required to rule out cancer. Though most cases do not require treatment, surgical excision of cysts is usually done when it starts causing symptoms or for cosmetic reasons.