Definition of phantom tumour in US English:

phantom tumour

(US phantom tumor)


  • (Originally) a mass in the abdomen resembling a tumour, usually attributed to abnormal contraction of the abdominal musculature; (later also) any of various other conditions simulating neoplasms, especially a loculated pleural effusion resembling a lung tumour on X-ray.


Mid 19th century; earliest use found in Thomas Watson (1792–1882), physician.