Orbital Involvement in Castleman Disease

A Rare Case of Orbital Castleman Disease with Overlapping IgG4-Related Disease

Multicentric Castleman disease (MCD) is a systemic lymphoproliferative disorder that can lead to mass lesions in various body parts, including the lungs, kidneys, and extranodal sites. Meanwhile, orbital Castleman disease is extremely rare. Immunoglobulin G4-related disease (IgG4-RD) is a recently recognized fibroinflammatory disorder and is characterized by the formation of tumor-like lesions with lymphoplasmacytic infiltrates, which are enriched in IgG4-positive plasma cells and may present with a characteristic storiform pattern of fibrosis to variable degrees. In this study, we report a case of a 67-year-old Taiwanese man with a 7-year history of bilateral eyelid swelling and proptosis. Orbital magnetic resonance imaging revealed soft tissue lesions in the bilateral intraconal region, demonstrating strong enhancement in the lacrimal glands, and extension into the bilateral infraorbital foramen, suggesting an orbital lymphoproliferative disease. The histopathological results of the intraorbital tumor excision were suggestive of a plasma-cell-predominant mixed-cell variant of MCD. However, the patient also showed definitive signs of IgG4-RD, including lacrimal gland enlargement and histopathological results of plasmacytosis, fibrosis, and germinal centers, with an increased ratio of IgG4 cells and elevated serum IgG4 levels. This case suggests a potential interacting pathway between these two disease entities that needs further studies.

[Idiopathic multicentric Castleman's disease]

Idiopathic multicentric Castlemans disease is a rare lymphoproliferative disorder that has many similar laboratory, radiological, clinical and pathological manifestations with various conditions, including IgG4-related disease. Increased activity of cytokines, especially interleukin-6, leads to systemic inflammatory symptoms with the development of lymphadenopathy and rarely extranodal lesions. Histological changes in the lymph nodesin hyaline vascular and plasma cell variants of Castlemans disease are hardly distinguishable from the pattern of reactive, tumor and IgG4-related lymphadenopathy. Idiopathic multicentric Castlemans disease can be diagnosed only when infection with human herpesvirus-8 type and human immunodeficiency virus is excluded. In the article, the authors describe two cases of idiopathic multicentric Castlemans disease, including the first world literature description of extranodal damage of the hip muscle in this disorder. In addition, the authors gave a review of the literature on the main clinical, laboratory and morphological manifestations, which allow confirming the diagnosis of Castlemans disease.

Clinical characteristics of a concurrent condition of IgG4-RD and Castleman's disease

IgG4-related disease (IgG4-RD) and Castleman's disease (CD) share similar clinical manifestations. When the histopathology coincides with the diagnosis of both IgG4-RD and CD, it is hard to depart the two disease entities utterly; here we call it IgG4-CD provisionally. In this study, we aim to review the clinical features of IgG4-CD. This study is based on a retrospective analysis of a prospectively acquired database. IgG4-CD was defined histopathologically in patients who fulfilled the diagnosis of both IgG4-RD and CD. Forty-five definite IgG4-RD and 16 multicentric CD (MCD) patients were recruited as controls. Clinical features including organ involvement, serum IgG4, IgG, IgE, ESR, CRP, and IL-6 levels were collected and analyzed. Fifteen patients (2.8%) out of 534 patients with IgG4-RD in China's largest prospective IgG4-RD and Mimicry cohort fulfilled the definition of IgG4-CD. There were 14 males and 1 female, whose mean age was 47 ± 18 years old, and the median disease duration before diagnosis was 12 (1-132) months. Eight patients have allergic disease history. IgG4-CD patients had more lymph node involvement (100 vs 57.8%, P < 0.01), while IgG4-RD patients had more submandibular (33.3 vs 77.1%, P < 0.01) and parotid gland (13.3 vs 40.9%, P < 0.05) affected. IgG4-CD patients had significantly higher levels of ESR, CRP, IgG, IgG1, IgG3, IgG4, and IgE than IgG4-RD patients. Compared with MCD patients, IgG4-CD patients showed higher incidence of salivary gland and paranasal sinus involvement, higher hemoglobin, eosinophil count, serum IgG4 level and IgG4/IgG ratio, and lower CRP, IL-6 levels, and IgG1/IgG, IgG2/IgG ratio. All patients with IgG4-CD exhibited relatively favorable outcomes. Both IgG4-RD and CD can involve multiple organs. There are a small group of patients who had clinical and pathological characteristics of both CD and IgG4-RD showed better clinical outcome. In the long-term prognosis of these patients, the relationship of CD and IgG4-RD is waiting to be further elucidated.

Posterior segment involvement in Castleman disease

PURPOSE

We present here a patient with Castleman disease, a rare lymphoproliferative disorder, involving the vitreous. Her clinical findings are described.

METHODS

Retrospective case study with slit-lamp photographs. A 28-year-old woman with known Castleman disease presented with visual complaints. Her ophthalmic findings are described.

RESULTS AND CONCLUSION

Based on literature searches, this is the first reported patient with Castleman disease having putative involvement of the vitreous body.

Castleman's disease in the orbit of a 17-year-old girl: a case report

Castleman's disease is an atypical lympho proliferative disorder comprising hyaline vascular elements, plasma cells, or a mixture of both, which can present in unicentric or multicentric fashion. Resection of unicentric lesions is typically curative, but multicentric disease, also characterized by constitutional symptoms and a poorer prognosis, often requires treatment with chemotherapy, radiation, steroids, or immune modulators. Castleman's disease is rarely diagnosed in the orbit. The authors present the clinical and histopathological findings of a 17-year-old who was found to have a focal lesion in her orbit. She was successfully treated with surgical resection and was free of disease recurrence or other sequelae at 10-months follow up.

A rare case of bilateral orbital Castleman disease

Castleman disease is a non-neoplastic cause of lymphadenopathy, first described in 1956 by Dr. Benjamin Castleman. Orbital involvement in Castleman disease is extremely rare. We report a case of bilateral orbital Castleman disease in a 48-year-old Asian male who presented with bilateral inferior dystopia. MRI revealed bilateral extraconal superior orbital mass. Histopathology and immunohistochemistry of the mass revealed features of Castleman disease of hyaline vascular type. Castleman disease should be a differential in suspected idiopathic orbital inflammatory disease and lymphoproliferative disorders.

Refractory uveitis in patient with castleman disease successfully treated with tocilizumab

Although multicentric Castleman disease is a rare but life-threatening disease, eye complications are extremely uncommon. We present a case of refractory uveitis accompanied with Castleman disease successfully treated with tocilizumab. A 58-year-old man with Castleman disease was introduced for refractory uveitis to Chiba University Hospital. Large cells were detected in the anterior chamber and increased vascular permeability of retinal vessels has been found in both eyes. Although the patient was treated with oral and eye drop steroid treatment, the uveitis symptoms had not decreased. The serum levels of CRP and IL-6 were increased. The level of IL-6 concentration in the anterior chamber was the same as the serum level of IL-6. The humanized anti-IL-6 receptor-antibody (tocilizumab) was administrated for the patient because of poor general condition. After tocilizumab treatment, large cells in the anterior chamber were undetectable and vascular permeability was improved in FA. The serum levels of CRP and IL-6 decreased and the general condition improved. The side effect of tocilizumab was not observed during the treatment. Tocilizumab treatment was significantly effective for uveitis accompanied with Castleman disease. Although it is extremely rare, uveitis accompanied with Castleman disease may be one of the hallmarks to consider tocilizumab treatment.

Castleman disease and associated autoimmune disease

PURPOSE OF REVIEW

Castleman disease can occur in association with autoimmune connective tissue disease and confound the clinical picture, resulting in delayed diagnosis and suboptimal treatment. This review focuses on the intersection of Castleman disease and autoimmunity with an emphasis on shared pathology and mutually beneficial treatments.

RECENT FINDINGS

Targeting CD-20, interleukin-6, and the nuclear factor-κB pathway has shown promise in achieving long-term remission in patients with Castleman disease and associated autoimmune features.

SUMMARY

Advances in understanding of pathogenic cell types and cytokines in Castleman disease have allowed the development of targeted therapies successful in the treatment of both Castleman disease and associated autoimmune disease.