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Dear Dr. Roach: I recently was diagnosed with a benign pleomorphic adenoma of the parotid gland. My surgeon says that the mass should be removed, and explained many of the risks. The risks terrify me: Frey鈥檚 syndrome, facial paralysis, numbness.

Dear Dr. Roach: One of my sisters died unexpectedly in late January of pneumonia. She did not know she had it. She showed no symptoms prior to her death. She went to work the day before and complained a little to co-workers of minor chest pain.

Aristotle, the Greek philosopher, remarked, 鈥淭here are no boy philosophers.鈥� Fortunately, most of us do get wiser as we age.

Dear Dr. Roach: About seven years ago, my niece was pregnant with twins and developed chest pains and could not breathe well. She was rushed to the emergency room and found out she had blood clots in her lungs.

Dear Dr. Roach: I hope you can answer some questions about myelodysplastic syndrome. What does it do to your body? Is there a known cause or cure? What is the prognosis? P.B.

Dear Dr. Roach: Is Januvia an effective drug for diabetes? What are the side-effects? M.A.A. Sitagliptin (Januvia) is an oral medication for diabetes mellitus.

How should hockey star Sidney Crosby, or my own child, be treated if he suffered a brain concussion? To answer this question, I interviewed Dr.

Dear Dr. Roach: I have lupus, so聽my kidneys and other organs are always of concern.

Dear Dr. Roach: My 14-year-old daughter has been diagnosed with and is being treated for depression. She has been suffering for at least two years now. I go over things in my mind and wonder if I had anything to do with her depression.

Dear Dr. Roach: My husband is 68. On a blood test in a doctor鈥檚 office, he had a CPK level of 694. He walks, on average, six miles per day, and drinks probably two or three glasses of wine four days a week, and a martini once or twice a week.