Vulvitis plasmacellularis: two new cases

Plasma Cell Vulvitis Treated with Platelet-rich Plasma: A Case Report

Plasma cell vulvitis is a rare inflammatory disorder of the vulva with an unknown aetiology, characterised by mucosal inflammation. It commonly manifests as pain, itching, dyspareunia, and dysuria and clinically presents as erythematous plaque and macules on the vulva. This condition is refractory to available treatment modalities in the literature. We present a case of a 70-year-old female with histopathologically proven plasma cell vulvitis treated by platelet-rich plasma therapy after multiple failed treatment attempts with topical steroids and immunomodulators. The patient improved both symptomatically and clinically on follow-up with platelet-rich plasma therapy. Platelet-rich plasma which is a new novel treatment can be a therapeutic option for recalcitrant cases of plasma cell vulvitis.

Keywords

case report; immunosuppressant; platelet-rich plasma; vulvitis.

Plasma cell vulvitis: A systematic review

Background

Plasma cell vulvitis (PCV) is an inflammatory vulvar dermatosis that is not well characterized. Diagnosis is often delayed, and the condition can be refractory to treatment. To date, there are no systematic reviews on this topic.

Objective

This study aimed to provide a systematic review of PCV, including epidemiologic, clinical, and histopathologic findings, as well as associated comorbidities and treatment options.

Methods

A primary literature search was conducted using the PubMed, Ovid Medline, Cochrane, and CINAHL databases.

Results

Fifty-three publications with 196 patients (mean age: 55.3 ± 14.5 years) were included. The majority of studies were case reports and case series. Common symptoms included burning/stinging (52%), dyspareunia (44%), and pruritus (41%). Common findings included erythema (84%), glistening/shiny appearance (29%), well-demarcated lesions (25%), and erosions (22%). Common anatomic sites were the labia minora (45%), introitus (31%), and periurethral (19%). Fifty-three percent of patients had a solitary lesion. Common histologic findings were a predominant plasma cell infiltrate (88%), presence of other inflammatory cells (55%), hemosiderin/siderophages (46%), and epidermal atrophy (43%). Topical corticosteroids (64%) and tacrolimus ointment (13%) were the most frequent treatment modalities. In most reports, previous treatments were tried, and there was a diagnostic delay.

Conclusion

PCV is likely underrecognized and should be considered in patients with erythema of the mucous and modified mucous membranes, symptoms of burning or stinging, and a predominant plasma cell infiltrate on histopathology. First-line therapy should begin with high-potency topical corticosteroids, with the most evidence for clobetasol 0.05% or tacrolimus 0.1% ointment. Prospective studies are needed to further characterize this condition and to develop treatment guidelines.

Zoon vulvitis

Zoon vulvitis or vulvitis chronica plasmacellularis is a rare, chronic benign inflammation of the vulvar mucosa, diagnosed histologically, with variable therapeutic responses. It is important to be diagnosed because it mimics the presentation of other genital conditions, such as lichen planus and squamous cell carcinoma, which require specific treatment. We report a case of a female patient with three asymptomatic shallow ulcers on the labia minora. Laboratory tests ruled out infectious diseases and the biopsy was consistent with Zoon Vulvitis.