IgG4-related pachymeningitis and mastoiditis, associated with cerebral venous thrombosis: A case report

IgG4-related disease of the mastoid: a rare presentation of a novel diagnosis

IgG4-related disease (IgG4-RD) is an inflammatory condition characterised by infiltration of tissue by IgG4-positive plasma cells. This is the seventh reported case of IgG4-RD affecting the mastoid and informs clinicians in diagnosing patients affected by this rare condition.A woman in her 20s presented with unilateral otalgia, hearing loss and vertigo. She deteriorated despite antibiotic therapy and cross-sectional imaging revealed a destructive extra-axial lesion of the mastoid cells. Biopsy confirmed a diagnosis of IgG4-RD. She was successfully treated with prednisolone and azathioprine.Inflammatory conditions should be considered in patients with persistent middle ear symptoms after infection and malignancy are excluded. Delays in diagnosis can lead to irreversible mass effects and may occur as current diagnostic criteria exclude mastoid-specific features.IgG4-RD remains a rare diagnosis. To avoid significant effects on a patients' quality of life, prompt multidisciplinary treatment is vital alongside development of diagnostic criteria specific to otolaryngology.

Otologic manifestations of IgG4-related disease

IgG4-related disease (IgG4-RD) is a systemic autoimmune fibroinflammatory disease characterized by multiorgan infiltration of IgG4-positive plasma cells, fibrosis and vasculopathy that determine dysfunction of the affected organ. This review aims to characterize the otologic manifestations of the disease. We have conducted a systematic review of the biomedical literature published describing cases of IgG4-RD with otologic manifestations. For the review, the bibliographic databases utilized were Pubmed, Web of Science and Scopus. We selected 48 cases from which we extracted several data collections. About 52% of the patients were male between the ages of 19 and 79 years. Otologic findings were characterized by pseudotumoral lesions that most often caused a clinical presentation similar to otitis media with effusion, with cochlear involvement or sensorineural hearing loss (uni- o bilateral). Less frequent presentations included auricular chondritis, eosinophilic otitis, or hypertrophic pachymeningitis. In 32 patients (67%) the otologic manifestation was the first symptom of the ER-IgG4. Sixteen patients (33%) were treated with mastoidectomies as a result of delayed diagnosis and lack of knowledge about this entity. Two patients needed a cochlear implant. Although the otologic manifestations of IgG4-RD are unusual, it is important for the otorhinolaryngologist to know the otologic manifestations of this entity as it can be the onset of the disease, in order to allow early diagnosis and adequate treatment, avoiding permanent sequelae.

IgG4-related disease associated with the primary manifestation of recurrent cerebral venous thrombosis: A rare case report

Nervous system involvement in IgG4-related systemic disease (IgG4-RD) is rarely reported and manifests as hypertrophic pachymeningitis and hypophysitis. In this report, a 33-year-old woman with neurological manifestations was diagnosed with IgG4-RD by biopsy. The patient showed improvement in symptoms after treatment.