This is Dr Basu, Experienced Specialist.
I am here to address your concerns and provide great service.
One nodule does not suggest cancer.
Cancer would have caused lot of nodules by now.
Also pain during raking suggests muscle strain related problem.
Yes the nodule is likely a swollen lymph node.
But that is very common in groin from viral
infection or from friction.
I will not worry about cancer since you do not have any significant weight loss, or any other symptoms except for pain.
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