Aphthous Stomatitis and Laryngitis, Another Form of Presentation of an IgG4-Related Disease?

A novel treatment for supraglottic stenosis secondary to immunoglobulin G4-related disease

Although immunoglobulin G4-related disease (IgG4-RD) has a predilection for the head and neck region, laryngeal pathology is rare. We report a case of supraglottic stenosis due to IgG4-RD together with a novel treatment strategy of employing a laryngeal stent. A 69-year-old man was referred with longstanding dyspnoea and worsening inspiratory stridor. Despite two supraglottic dilations over a 12-month period, his stenosis recurred and symptoms persisted. Serum investigations revealed elevated IgG4 levels (2.390g/l), with IgG4 infiltrate in laryngeal biopsies. The patient underwent endoscopic balloon dilation, intralesional Depo-Medrone® injection, CO₂ laser therapy and insertion of a laryngeal stent to prevent re-stenosis. Rituximab and prednisolone were commenced postoperatively and the stent was removed at 6weeks. No stenosis recurrence was visualised over a further 12-month follow-up period. Sixteen cases of laryngeal lesions with confirmed IgG4 infiltrate in biopsies have been reported in the worldwide literature to date. Based on a literature review and our experience, we recommend that similar laryngeal pathologies undergo early IgG4 serological testing and biopsy immunohistochemistry. Prompt diagnostic confirmation may prevent unnecessary surgical interventions and optimise immunosuppression. Furthermore, the use of a laryngeal stent following laryngeal surgery may help reduce stenotic recurrence and promote healing.

Atypical presentation of immunoglobulin G4-related disease as subglottic stenosis: a case-based review

Immunoglobulin G4-related disease (IgG4-RD) is a recently recognized fibro-inflammatory pathology that has been reported to affect principally the retroperitoneum, hepatobiliary system, salivary glands, orbital structures or lymph nodes. However, IgG4-RD with laryngeal involvement is a very rare entity. Our aims were to describe a case of subglottic stenosis as first and only manifestation of IgG4-RD and review the literature. A patient with IgG4-RD affecting the larynx that presented as subglottic stenosis is described. A MEDLINE database search of IgG4-RD cases with laryngopharyngeal manifestations was also conducted. A 30-year-old Caucasian woman was referred to a tertiary care hospital for dyspnea on exertion, which had been increasing for the last 4 months. Medical and surgical procedures revealed a subglottic stenosis, with a histological finding of IgG4 positive plasma cell infiltration. There was no evidence of other organ involvement. She was successfully treated with oral glucocorticoids and rituximab infusions. Glucocorticoids were rapidly tapered and the rituximab regimen was optimized, with no evidence of relapses. In the literature review, we found a total of 12 reported cases with laryngopharyngeal involvement, two of them with subglottic stenosis. IgG4-RD of the larynx is rare but should be considered after excluding more common disorders.