HI,Dear,thanks for the query to HCM.
I studied your query in details given by you.
-Regarding Cause of Groin Lump-
-As the lump is growing over 2-3 mths, mostly it appears to be a inguinal
hernia.
-For typing it-I would advise you to consult a ER Surgeon for a clinical check -which is very essential for you to decide the type of the hernia?Indirect or Direct / or if its femoral ?like that.
-In your case being a heavyweight lifter -your hernia is Indirect inguinal type.
-Its definitely a hernia -as it pains when you stand after sitting / and hence definitely the groin lump is not lymphnode.
Treatment -I would advise the treatment-
a-Mesh repair of the Indirect Inguinal hernia after due investigations to rule out the
diabetes.
Hope this would help you to plan your treatment with your treating doctor.
Wish you fast recovery.
Wellcome to HCM for any further query in this reguard.
Good Night from INDIA.
DR.SAVASKAR