Case Number : Case 2025 - 09 March 2018 Posted By: Dr. Richard Carr

Cystic lesion lined by cuboidal epithelium. Mesonephric (Gartner's) duct cyst.

Coul be a vestibular mucous cyst too. Topography is important, either way this is benign

Paraurethral (Skene) Gland Cyst or Prostatic-Type Tissue of the Vulva
 

In the OB / GYN literature,  this type of cyst is called mucinous and cilated cyst (of the vulva).

Reminds me of mucinous and ciliated cyst as anh mentions - single layer of columnar mucinous epithelium, some of which are ciliated. Thought to arise from minor vestibular glands?

I called it a Mullerian cyst (mucinous and ciliated but have to admit the cilia disappeared a little when I came to take the photomicrographs). I'll try to get it looked at again but someone with GYN interest. All agreed it's benign!

Case kindly reviewed by Dr Shatrughan Sah as follows:

I agree with you. It looks like Mullerian cyst to me as well. The cyst lining is endocervical type with some mucin within the cells. One can do mucin stain to confirm and this will help to differentiate from mesonephric (Gartner’s duct) cyst. I could not see definite squamous metaplasia which is commonly associated with Mullerian cyst. I am happy to call this as Mullerian cyst. We do see Mullerian cyst and Mesonephric cyst in vulvovaginal region once in every 2-3 month.  Mesonephric cyst is almost always located in lateral wall of the vagina and therefore clinical history is very important.