Chest
Volume 103, Issue 6, June 1993, Pages 1909-1910
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Selected Reports
An Uncommon Case of Brainstem Tumor With Selective Involvement of the Respiratory Centers

https://doi.org/10.1378/chest.103.6.1909Get rights and content

We report a clinical case of a young man with a brainstem tumor with a stable alveolar hypoventilation syndrome as the only symptom of the disease. The ventilatory response to CO2 was almost absent and the ventilatory pattern during tidal breathing was very irregular. The diagnosis was made by magnetic resonance imaging of the brain and confirmed by a stereotactic brain biopsy specimen.

(Chest 1993; 103:1909-10)

Section snippets

CASE REPORT

A 24-year-old white man with β-thalassemia minor was referred to our examination for evaluation of respiratory failure, hypertension, and erythrocytosis. The patient complained of sleep disorders (restlessness, sudden awakenings, enuresis) and diurnal sleepiness that impaired working efficiency and interpersonal relationships. On physical examination we found the following: mild cyanosis; irregular respiratory rate and continuously changing tidal volume; systolic murmur at the apex and at the

DISCUSSION

The tumor probably started some years before the appearance of a clear clinical picture. The initial functional effect was a sleep apnea syndrome that escaped detection for a long time. Owing to the slow evolution of the neoplasm, the control of breathing was probably modified first during sleep, then also during wakefulness, leading to a stable alveolar hypoventilation.

The hypoxia, due to the hypoventilation, increased the erythropoiesis. However, this patient had a normal value of hemoglobin

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There are more references available in the full text version of this article.

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