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Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

Anterior High-Resolution Optical Coherence Tomography in the Diagnosis and Therapeutic Monitoring of Ocular Surface Squamous Neoplasia

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Inflammatory pseudotumour affecting the lung and orbit.

Kazuma Kishi¹, Takeshi Fujii, Tadasu Kohno

¹Department of Clinical Oncology, Toranomon Hospital, Tokyo, Japan. kazumak@toranomon.gr.jp

Respirology (Carlton, Vic.)

|April 9, 2009

Summary

This case report details a rare instance of inflammatory pseudotumor affecting both the orbit and lung in a 78-year-old man. The study highlights the IgG4-related nature of these metachronous lesions.

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Area of Science:

Oncology
Pathology
Immunology

Background:

Inflammatory pseudotumors are rare benign lesions that can occur in various organs.
Metachronous presentation, where tumors arise at different times in different locations, is uncommon.

Observation:

A 78-year-old male patient with a history of orbital inflammatory pseudotumor developed a new lung mass.
Elevated immunoglobulin G (IgG) and antinuclear antigen levels were detected serologically.

Findings:

Histological examination revealed lymphoplasmacytic infiltration and dense fibrosis.
Flow cytometry confirmed the polyclonal nature of the infiltrating cells.
Immunostaining identified numerous IgG4-positive plasma cells, indicating an IgG4-related process.

Implications:

This case expands the understanding of IgG4-related disease presentation.
Highlights the importance of considering systemic involvement in patients with inflammatory pseudotumors.
Suggests potential for novel diagnostic and therapeutic strategies for IgG4-related orbital and pulmonary lesions.