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Case Report: Saddle Nose Deformity in IgG4-Related Disease

Alyxandra Soloway, MD, & Stephen Soloway, MD, FACP, FACR  |  Issue: June 2021  |  June 14, 2021

Destruction of the patient’s nasal septum was evident.

Figure 1. Destruction of the patient’s nasal septum was evident.

Immunoglobulin G4-related disease (IgG4-related disease) is relatively rare, although with greater recognition it is becoming more frequently diagnosed. Some of the more common presentations of the disease include aortitis, cholangitis, autoimmune pancreatitis, sclerosing sialadenitis, orbital disease with proptosis and subacute mass development in the affected organ.1 It has protean manifestations and is diagnosed by classic pathologic findings, which include storiform fibrosis, lymphoplasmacytic infiltrates, eosinophils and obliterative phlebitis.2

This case demonstrates a rare presentation of IgG4-related disease, presenting with a distinct clinical feature of saddle nose deformity. Saddle nose deformity is recognized in other conditions, such as relapsing polychondritis, granulomatosis with polyangiitis, congenital syphilis, leprosy, cocaine use and trauma.3 It is important to consider IgG4-related disease as as one of the potential causes of a saddle nose deformity.

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The Case

A 55-year-old white woman presented to her rheumatologist with six months of painless swelling in the submandibular and parotid glands associated with arthralgias, myalgias and weight loss. She never had a fever. Her medical history was significant for gallstones and pancreatitis. At the time, her pancreatitis was thought to have been caused by a viral infection.

Upon evaluation, she had a computerized tomography scan performed that showed destruction of the nasal septum (see Figure 1, right). An endoscopic evaluation revealed nasal septal collapse and erosions. A biopsy revealed lymphoplasmacytic infiltrates, storiform fibrosis, obliterative venulitis and eosinophils. Her serum IgG4 level was 300 mg/dL. Immunohistochemistry showed IgG4 positive plasma cells, more than 60 per high power field.

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No evidence of cocaine use, abscess, granulomatosis with polyangiitis, granulomas or giant cells was present. The patient was tested and screened negative for tuberculosis, fungi and syphilis. She had no other organ involvement.

The patient responded well to 1 mg/kg of prednisone and remains stable after plastic surgery.

It is important to consider IgG4-related disease as part of the differential diagnosis of the many causes of a saddle nose deformity.

Discussion

Saddle nose deformity in IgG4-related disease has typically been associated with an increased serum level of IgG4 and classic pathology, such as lympho­plasmacytic infiltrate, storiform fibrosis and obliterative phlebitis. Elevated IgG4 in the serum is not requisite for diagnosis. The number of IgG4-positive plasma cells and ratio of IgG4 to IgG-positive cells varies depending on the tissue involved.4

Although diagnosis may take years of multi-organ manifestations and biopsies of various organ systems, this seemingly rare, but likely underdiagnosed, disease responds very well to glucocorticoids and rituximab. Increased awareness is necessary to start treatment earlier and achieve better outcomes.

Conclusion

This case demonstrates an increasingly important presentation of a somewhat rare disease. This disease can affect any organ and is important to consider in any differential diagnosis of saddle nose deformity.


Alyxandra Soloway, MD, is an internal medicine resident in the Department of Medicine of Inspira Health Network in Vineland, N.J.

Stephen Soloway, MD, FACP, FACR, is chair of the Division of Rheumatology, Department of Medicine, Inspira Health Network in Vineland, N.J.

Classification Criteria for IgG4-Related Disease

The ACR and EULAR published classification criteria for IgG4-related disease (IgG4-RD) in the January 2020 issue of Arthritis & Rheumatology. The criteria were developed primarily to identify patients for inclusion in clinical trials and other studies, and are not intended for diagnostic use in clinical practice.

The three-step classification process is:

  1. First, it must be demonstrated that a potential IgG4-RD case has involvement of at least 1 of 11 possible organs in a manner consistent with IgG4-RD.
  2. Second, exclusion criteria consisting of a total of 32 clinical, serologic, radiologic and pathologic items must be applied; the presence of any of these criteria eliminates the patient from IgG4-RD classification.
  3. Third, eight weighted inclusion criteria domains, addressing clinical findings, serologic results, radiology assessments and pathology interpretations, are applied.

References

  1. Stone JH, Zen Y, Deshpande V. IgG4-related disease. N Engl J Med. 2012 Feb;366(6):539–351.
  2. Cheuk W, Chan JK. IgG4-related sclerosing disease: A critical appraisal of an evolving clinicopathologic entity. Adv Anat Pathol. 2010 Sep;17(5):303–332.
  3. Schreiber BE, Twigg S, Marais J, et al. Saddle-nose deformities in the rheumatology clinic. Ear Nose Throat J. 2014 Apr-May;93(4-5):E45–47.
  4. Khosroshahi A, Stone JH. A clinical overview of IgG4-related systemic disease. Curr Opin Rheumatol. 2011 Jan;23(1):57–66.

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Filed under:ConditionsOther Rheumatic Conditions Tagged with:case reportIgG4 related diseasesaddle nose deformity

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