Editing Female Urethral Diverticulae (section)

== Anatomy ==

* Size of diverticulum can be few mm to several cm
*'''<span style="color:#ff0000">Ostium of the urethral diverticulum is located postero/ventrolaterally at the 4 and 8 o’clock positions in the mid- or distal urethra in >90%, corresponding to the location of the periurethral glands'''
* The interior surface of the UD may be urothelial, squamous, columnar, or cuboidal epithelium, or mixed. In some cases, the epithelium is absent and the wall of the UD consists of only fibrous tissue.
* 2/3 of resected UD demonstrate inflammatory changes. Most UD demonstrate benign histopathology but premalignant and malignant changes can be seen.
** '''<span style="color:#ff0000">Most common malignant histology in urethral diverticulum is adenocarcinoma'''
*** '''<span style="color:#ff0000">Recall, most common malignant histology in females urethral carcinoma is squamous cell carcinoma while in male urethral cancers most common histology is urothelial;''' see [[Urethral Tumours|Urethral Tumours Chapter Notes]])