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[Thymoma complicated with miliary tuberculosis].

Akira Kisohara1, Noriaki Takahashi, Yoshiaki Koya

  • 1First Department of Internal Medicine, Nihon University School of Medicine, 30-1, Oyaguchi-Kamimachi, Itabashi-ku, Tokyo 173-0032, Japan. kisohara@med.nihon-u.ac.jp

Kekkaku : [Tuberculosis]
|June 21, 2002
PubMed
Summary
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This study details a rare case of thymoma co-occurring with miliary tuberculosis. Surgical removal of the thymoma led to improved tuberculosis response and altered immune cell profiles.

Area of Science:

  • Immunology
  • Oncology
  • Infectious Diseases

Background:

  • Thymoma, a tumor of the thymus, can be associated with various paraneoplastic syndromes.
  • Miliary tuberculosis is a severe disseminated form of tuberculosis.

Observation:

  • A 69-year-old female presented with weight loss, fatigue, and dyspnea, exhibiting diffuse lung shadows.
  • Biopsies confirmed granulomas indicative of miliary tuberculosis, and imaging revealed a mediastinal mass suggestive of thymoma.

Findings:

  • The patient underwent anti-tuberculosis therapy and thymectomy, with pathological confirmation of thymoma.
  • Post-thymectomy, a negative purified protein derivative (PPD) reaction was noted. Immune analysis showed recovery of phytohemagglutinin (PHA) and concanavalin A responses, but a decrease in CD4 T cells and T helper 1 cells, with increases in B cells and natural killer (NK) cells.

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Implications:

  • This case highlights the complex interplay between thymoma and tuberculosis, impacting immune status.
  • The findings suggest thymoma may influence the immune response to tuberculosis and alter T and B cell populations.