Does early stage small cell lung cancer cause muscle loss and malabsorption or are these later symptoms?

Lung cancer cachexia: Muscle wasting and weight loss ("cancer cachexia") are usually late stage occurrences; malabsorption is usually not the cause of these signs, but rather "hormones" released from the tumor cause a hyper metabolic state and also contribute to poor appetite. If you are already experiencing these problems, however, it is possible that the tumor - although localized (stage 1) is unusually active.