Erlotinib is active in patients with lung cancer; especially those who demonstrate
a mutation in exons 18-21 in the epidermal growth factor receptor (EGFR) gene. Patients
with lung cancer and brain metastases have poor prognosis as systemic chemotherapy
is ineffective in treating the central nervous system (CNS) metastases due to its
inability to cross the blood brain barrier. Herein, we report a case of a 61 year
old female who presented with stage IV adenocarcinoma of the lung with bilateral cerebral
and cerebellar CNS involvement. The patient′s tumor harbored a mutation in exon 19
in the EGFR gene. Treatment with erlotinib was started as soon as the molecular studies
were available with remarkable and complete radiographic response in the CNS disease,
and complete resolution of the previously detected metastases. The patient did not
receive any other CNS intervention and radiation was not given due to the lack of
CNS symptoms.
Keywords
Brain metastasis - Erlotinib - lung cancer - tarceva