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  • Title: Asymptomatic tracheal MALT lymphoma discovered on spirometric findings presenting with elevated respiratory resistance.
    Author: Kadota N, Shinohara T, Machida H, Nakanishi H, Suehiro F, Toda H, Yoshino T, Ogushi F.
    Journal: BMC Res Notes; 2015 Jun 06; 8():223. PubMed ID: 26048050.
    Abstract:
    BACKGROUND: Central airway obstruction (CAO) may be caused by various etiologies. However, conventional chest X-rays are rarely diagnostic for patients with CAO. CASE PRESENTATION: We here described a 64-year-old asymptomatic female with tracheal mucosa-associated lymphoid tissue lymphoma discovered on spirometric findings during a complete physical examination. The plateau of forced expiratory flow was consistent with CAO. A decreased peak expiratory flow rate was noted at least 3 years before the diagnosis, and was attributed to an insufficient effort by the patient. Impulse oscillometric measurements, which were taken during quiet breathing and were effort-independent, suggested elevated respiratory resistance. These abnormalities completely disappeared after radiation therapy. CONCLUSION: The addition of impulse oscillometry to spirometry may be useful for screening CAO in routine health examinations.
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