A 53-year-old male asked:
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If small cell lung cancer grows so quickly, why is the primary often difficult to visualise on CT with contrast? Is the primary slow growing? Thanks.

1 doctor answer
Dr. Gurmukh Singh
48 years experience in Pathology
Observation: It is not clear why small cell lung cancer can have larger secondaries than the primary lesion. But it is a common observation and metastatic lesions/secondaries may be the first manifestation of this cancer and the primary may be difficult to visualize. It is not due to the slow growth rate of the tumor.
Answered on Apr 19, 2017
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