In the last stage of disease, BT patients may
present with severe symptoms as a result of the
growing tumor and treatment side effects. This
may lead to cognitive decline, impaired level of
consciousness, visual and auditory impairment,
poor functional status, progressive bulbar weakness,
loss of motor function/gait impairment,
poor communication, and high need for support
for activities of daily living [ 10 , 13 , 15 ].