Unusual urethral diverticulum lined by colonic epithelium with Paneth cell metaplasia

Metaplastic Paneth Cells in Extra-Intestinal Mucosal Niche Indicate a Link to Microbiome and Inflammation

Paneth cells are residents of the intestinal epithelium. Abnormal appearance of Paneth cells has been widely documented in non-intestinal tissues within the digestive tract and even observed in non-gastrointestinal organs. Although metaplastic Paneth cells are part of the overarching pathology of intestinal metaplasia (IM), only a fraction of intestinal metaplastic lesions contain Paneth cells. We survey literature documenting metaplastic Paneth cells to gain insights into mechanism underlying their etiologic development as well as their potential relevance to human health. A synthesized view from this study suggests that the emergence of metaplastic Paneth cells at extra-intestinal mucosal sites likely represents a protective, anti-bacterial, and inflammatory response evoked by an altered microbial activity.

Urethral diverticula

Urethral diverticula are a common cause of chronic genitourinary symptoms in women. They occur in three percent of women overall with higher frequencies in selected populations of symptomatic women. The peak incidence is between the ages of 25-45 but they affect all ages. The classical presentation is with recurrent urinary tract infections and post micturition dribbling but almost any urinary symptom may be a presenting feature. Reported cure rates following surgery approach 70% for recurrent urinary tract infection and almost 100% for local symptoms such as dyspareunia. However, despite this and the availability of effective diagnostic techniques diagnosis is often delayed. This is partly due to a lack of awareness among clinicians and partly because the condition overlaps the traditional territories of gynaecologists and urologists.

The treatment of female urethral diverticulum with calculus through ultrasonic lithotripsy

A case report is presented of a large urethral diverticulum with calculus. We proposed the use of transurethral ultrasonic lithotripsy, followed by conventional surgical reconstruction 3 months later, when the condition had improved. The patient was completely cured.