Are the following sentences punctuated correctly?

Although, there is no definite evidence of malignancy, a biopsy should still be performed.

He is incidentally, allergic to contrast material.

Surgery, is not in my opinion indicated at this time.

No, #1 there should not be a comma after "although", The whole thing is an introductory adverb clause.

#2 "incidently should have commas before and after.

#3 "in my opinion" should be separated by commas before and after... There should not be a comma after "surgery".