Cerebellar dysfunction in patients with bronchogenic carcinoma: clinical and posturographic findings.

Neurological examination and posturography showed cerebellar signs in 13 of 50 unselected patients with bronchogenic carcinoma not complicated by other diseases. The occurrence of cerebellar signs did not depend on the histological type of tumour or the extent of tumour spread. Most of the clinically affected patients had mild to pronounced cerebellar atrophy, revealed by CT. The correlation between the amount of CT-confirmed atrophy and the severity of clinical symptoms, however, was poor. Since other reasons for cerebellar dysfunction (e.g. chemotherapy, chronic alcoholism, metastases) were excluded, cerebellar signs were attributed to paraneoplastic cerebellar degeneration or to a consequence of severe neoplastic illness. The high incidence of cerebellar dysfunction in patients with bronchogenic carcinoma confirms the frequent histopathological finding of cortical cerebellar degeneration in malignant disease.