How many of us realize the small number of patients who first consult a specialist for ailments that ultimately prove to be definite bone lesions and the vast number who first see the family doctor regarding vague rheumatic-like pains that may be the forerunners of serious disease? Is it not true that because of the frequent absence of obvious physical findings a hasty diagnosis of rheumatism, or, in younger individuals, of growing pains, is often made, and the patient given some form of analgesic? If the physician is more seriously impressed with the condition, even after complete physical examination does he not frequently satisfy himself that there is nothing serious and pass the matter off lightly? It is not our place, however, to blame the family physician, but rather to urge upon him that there is always a reason for persistent bone pain and to point out that, in justice both to himself and his patient, every attempt should be made to explain it. It is our hope to make the practitioner “neoplasm conscious,” to lead him, when other conditions are not self-evident, always to give serious consideration to tumor in his differential diagnosis, especially in younger individuals in whom the most malignant types of bone growths develop.