Dr. William L. Diehl, MD, Surgical Oncologist
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Dr. William L. Diehl, MD

Surgical Oncologist | Surgical Oncology

150 Park Ave. 2nd Floor Florham Park NJ, 07932
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About

William L. Diehl, MD, FACS, specializes in cancer surgery of the breast, pancreas, liver, biliary tract, esophagus, colon, rectum, and skin. Dr. Diehl also has expertise in general surgeries, including ...

Education and Training

Universidad Anahuac Escuela De Medicina, Mexico 1981

Board Certification

SurgeryAmerican Board of SurgeryABS

Provider Details

Male Spanish
Dr. William L. Diehl, MD
Dr. William L. Diehl, MD's Expert Contributions
  • How do chemotherapy and radiation differ?

    Chemotherapy in general is a treatment that is administered through intravenous infusion of medications and sometimes oral medications. The effects of the treatment attack cancer throughout the body regardless of where it is located. Radiation on the other hand is a focused beam of radiation that only treats the tissues that are being targeted and does not treat the rest of the body. READ MORE

  • What is a lump on my right side pubic area?

    You should be examined by a General Surgeon. This could be as simple as a hernia but it would be very difficult for me to say without an examination. READ MORE

  • It feels like I have something under my skin. What could it be?

    It is impossible to tell without an examination. You should see a general surgeon or a dermatologist to have them check it. READ MORE

  • Why is there a big lump on my head?

    It would be very hard to know without examining you. I would recommend that you go to your family doctor or internist 1st and have them assess the situation and then recommend you to a specialist based on what they find. READ MORE

  • What are the symptoms of breast cancer?

    In general breast cancer is asymptomatic. Also in general bilateral breast pain is not a symptom of breast cancer. However, she should go to her gynecologist for a clinical examination and then get a mammogram and ultrasound. READ MORE

  • What is the lump in my breast

    I would start by getting an examination by her gynecologist and having him order a mammogram and ultrasound. The majority of these lumps proved to be benign but they all need to be evaluated. READ MORE

  • When should I have a benign tumor removed?

    First of all, you need to be sure that it is some image guided biopsy. Once you are sure it is, then it is your choice as to when to have it removed, however, in general, I recommend that people simply remove them. READ MORE

  • What are the treatment options for prostate cancer?

    Without knowing the specifics of his cancer, I can only speak in general terms. Radiation therapy targeting the prostate or surgery to remove it are the mainstays of treatment. Occasionally hormonal therapy or other forms of hormonal manipulation may also be entertained. READ MORE

  • Will an ovarian dermoid cyst grow back after removal?

    It would be highly unlikely for the cyst to recur after complete removal. You should do very well. READ MORE

  • Should I do something with my neck cyst?

    In general terms if there is a small cyst in the neck then it’s probably a good idea to remove it although the chances of it being cancerous are very low at your age. The alternative would be to monitor it for several months to see if it changes but these are usually easier to deal with by excision READ MORE

  • Is ovarian cyst removal minimally invasive?

    It depends on the clinical situation. If the doctors are sure it’s cancerous then it is usually removed through an incision but if it is indeterminate then it can be removed with minimally invasive techniques. This is a judgment that must be made by your surgeon. READ MORE

  • Why can't some tumors be removed?

    The usual reasons why a tumor cannot be removed surgically have to do with involvement of vital vascular structures such as the arteries or veins heading into and out of the liver. There are times when those vessels cannot be sacrificed and in that situation the tumor cannot be removed. However if he has a good response to chemotherapy and the tumor shrinks then perhaps consideration to surgery may be given down the road. Unfortunately, the prognosis for gallbladder cancer is usually poor. I’m sorry to hear he’s going through this READ MORE

  • Is a hysterectomy recommended for cervical cancer?

    In general terms the answer is no. Furthermore if you wanted to prevent cervical cancer you would need to have a total hysterectomy with removal of the cervix although they could leave the ovaries behind. Nevertheless with careful yearly screening by your gynecologist if one were to ever develop it would be likely identified very early. READ MORE

  • How often do tumors come back after being removed?

    If patients treat the cancer as recommended by their surgical team, the risk of the cancer returning in general is quite low. To specifically quote rates of recurrence is not possible without knowing the exact details of your cancer and treatment recommendations, however, the chance of it coming back in the local area (Breast and lymph nodes) in general should be well under 10%. The chance of it coming back somewhere else in the body is a different calculation and beyond what I can answer in a general manner without specific information. You should discuss this in detail with your treatment team READ MORE

  • Can tumors be removed without surgery?

    This is a highly specialized area in Neurosurgery and not an answer I can provide. For these highly complex problems a second opinion at a tertiary care center would be a good idea READ MORE

  • Do benign tumors require to be removed?

    You 1st have to prove that it is benign before you can assume that it does not need to be removed. This can be done very simply with an ultrasound-guided core biopsy. If the biopsy proves that it's benign, then you have the option of waiting to see if it grows. However, if something is around 2 cm in size or greater, chances are it would best be removed. If it is proven to be benign, the chances of it causing complications down the line is small. This information is educational in nature, but you should make any final decisions based on discussions with your doctor. READ MORE

  • Does a thoracotomy carry a lot of risks?

    The surgery can result in serious complications, however, if he has a tumor that requires surgery, then there's no way around having the operation. Make sure the thoracic surgeon performs these operations on a frequent basis. READ MORE

  • How long is the recovery from a mastectomy?

    It depends on whether you are having reconstruction or not. In general with reconstruction the recovery is 2 to 3 weeks before you return to normal. There will be several drains that need to be removed after surgery but you should be able to move around freely within a very short period of time. One option that we provide our patients is to perform what is called a PEC block prior to surgery. This is done by injecting an anesthetic into the sensory nerves that go to the breast prior to the operation and the amount of pain that the patient experiences afterwards is substantially decreased in magnitude and length. READ MORE

  • How invasive is a tumor removal?

    It should not be overly invasive, particularly if it is simply under the skin. Many of these can be done under local anesthesia. READ MORE

  • Are surgical consultations used for women receiving mastectomies?

    Consultations are extremely important. First of all, not all women needed or should have a mastectomy and some women should undergo therapy prior to having a mastectomy. It is important to meet with a surgeon that has an extensive experience in the treatment of breast cancer so I would encourage you to follow through with this consultation. READ MORE

Expert Publications

Data provided by the National Library of Medicine

Areas of expertise and specialization

Breast Surgery and Breast Surgical OncologySurgical Oncology

Professional Memberships

  • American Society of Breast Surgeons  
  • American College of Surgeons  
  • American Medical Association  

Fellowships

  • General Surgical Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY   
  • Memorial Sloan Kettering  

Charities and Philanthropic Endeavors

  • UHMLA

Dr. William L. Diehl, MD's Practice location

150 Park Ave. 2nd Floor -
Florham Park, NJ 07932
Get Direction
New patients: 973-267-6400

75 E NORTHFIELD RD -
LIVINGSTON, NJ 07039
Get Direction
New patients: 973-436-1530
Fax: 973-422-0414

Practice At 261 James St Suite 2g

261 James St Suite 2g -
Morristown, NJ 07960
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New patients: 973-267-6400
Fax: 973-267-7295

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