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Dr. Leonard Nai-En Chen, MD is a transfusion medicine specialist in Washington, DC specializing in blood banking & transfusion medicine. He graduated from Taipei Medical University in 1997 and has 28 years of experience. Dr. Leonard Nai-En Chen, MD is affiliated with MedStar Washington Hospital Center, MedStar Health and MEDSTAR MEDICAL GROUP II LLC.
Breast Biopsy
Breast biopsy is a procedure where a small sample of tissue is collected from the breast for testing. A physician may prescribe a breast biopsy for a variety of reasons, but they are most frequently prescribed for a lump found in the breast. Biopsy samples extracted are examined by pathologists in a laboratory setting and are tested to determine if they are cancerous or benign, or indicative of some other condition. Depending on the lab results, physicians may prescribe additional treatment. Other circumstances which may prompt a breast biopsy include:
Breast biopsies are collected through several different procedures and the specific type of biopsy that a patient receives depends on the size, location, and features of a breast lump or irregularity. The three main methods of collecting a breast biopsy include:
Fine needle aspiration (FNA) and core needle biopsy (CNB) are sometimes image-guided, where a mammogram, ultrasound, or MRI helps direct the physician performing the needle extraction.
Fine needle aspiration, the most common biopsy method, generally requires few patient preparations. It is recommended patients avoid using lotion, deodorant, and perfume prior to their biopsy procedure. FNA biopsy is performed with local anesthesia (topical numbing cream) and typically has a quick recovery, but patients may experience soreness for a few days. Core needle biopsy extracts slightly more tissue than an FNA biopsy.
Open (surgical) biopsy is more invasive and requires general anesthesia, where patients are put to sleep during the procedure. Patients must fast prior to the surgery. After the biopsy is performed, patients are monitored in a recovery room for a time before being discharged, when they will need someone else to provide transportation.
Although some may consider breast biopsy to be a simple procedure, it can catch critical issues - particularly breast cancer - that impact wellness. If a breast biopsy reveals an underlying condition like life-threatening cancer, patients can receive the diagnosis and medical treatment that is necessary for their long-term health.
Colectomy (Colon Resection)
Colectomy is surgery to remove all or part of the colon, or the longest part of the large intestine. The colon may be affected by diseases such as cancer or inflammatory bowel disease. In a colectomy, all or part of the colon that is infected, blocked, or cancerous is removed.
A colectomy may be performed by laparoscopic or open surgery. A laparoscopic colectomy requires several small cuts on the abdomen, and uses a thin tube with a camera, called a laparoscope. Laparoscopic colectomies are less invasive than open procedures. For some individuals, a laparoscopic colectomy may not be possible, and instead an open colectomy is performed. In an open colectomy, a large incision is made on the abdomen. Open colectomies typically require longer recovery periods.
After the incisions are made, a portion of the colon is removed, and the remaining ends of the colon are attached to each other in a procedure called anastomosis. Waste can continue to travel through the body as normal. However, in some situations, it may be necessary for the end of the colon to be attached to an opening in the abdomen, called a stoma. This procedure is called an ostomy. Types of ostomies include:
An ostomy bag will be attached to the skin to collect waste. If the entire colon is removed, either an ileostomy is performed, or the small intestine is connected to the anus and waste may pass through as normal.
Stomas may be permanent or temporary. If the stoma is temporary, the ends of the colon will be rejoined in a later procedure. Temporary stomas are generally used to allow time for the colon to heal following surgery.
A colectomy may take between one and four hours. Following the procedure, patients will need to consume a liquid and low fiber diet before gradually returning to their normal diet. Patients will need to stay in the hospital for three to seven days for monitoring. Full recovery and return to normal activity may take anywhere from a few weeks to several months.
Sexual Health Issues
Sexual health is a broad and loosely defined term that encompasses several extremely different areas of medicine. Sexual health not only includes physical health related to the act of sex, but also emotional, mental, or identity issues that can interfere with healthy sexuality. Because this scope is so broad, a huge number of health care professionals can accurately say they work in the sexual health specialty. Some of the many varied conditions included in sexual health include intimacy disorders, sexually transmitted diseases, reproductive health, LGBTQ issues, and sexual violence.
Sexual intimacy disorders are those that cause problems with the act of sexual intercourse, such as erectile dysfunction or vulvodynia. Erectile dysfunction, the inability to get or maintain an erection hard enough for sexual intercourse, is extremely common. It affects fully half of men over 40 to some degree. It is treated with medications, devices, or surgery. Vulvodynia, burning pain in the vulva that can be made worse with sexal activity, has no known cause. It is treated with oral or topical medications.
Sexually transmitted diseases, including HIV/AIDS, herpes, gonorrhea, and chlamydia, are bacterial or viral infections that are contagious in the bodily fluids exchanged during sexual contact. Barrier methods of contraception, such as condoms, help prevent the spread of STDs. HIV is a virus that can be caught from an infected person's sexual fluids or blood. When the virus infects the body, it interferes with the immune system and causes the disease known as AIDS. There is no cure, but anti-viral medications can help people with AIDS live a long and healthy life. Herpes is also a virus found in sexual fluids, called HSV-2. It causes blisters that come and go on the genitals. There is no cure for herpes, but anti-virals can minimize outbreaks. Gonorrhea and chlamydia are both bacterial infections. They are extremely common and often have no symptoms. The most common signs of an infection are burning pain and discharge. Gonorrhea and chlamydia can be treated with medications.
Reproductive health refers to both contraception and infertility treatment. Contraceptives prevent and plan the timing of pregnancy. Some, such as a vasectomy or tubal ligation, are extremely effective at preventing pregnancy. Others, such as spermicides, are less reliable. Popular contraceptives include condoms, birth control pills, IUDs, and diaphragms. On the other side of reproductive health, infertility is the inability to carry a pregnancy to term after one year of trying. It can be due to problems in either the man or the woman, and both genders are affected equally. In total, about 15% of the population suffer from infertility. Infertility treatments include medications and surgery.
Gay and transgender people have a few specific health care needs that may sometimes fall under the sexual health umbrella. First, many LGBT people still face discrimination from healthcare providers, so providing supportive and appropriate care is an issue. Because of social attitudes surrounding sexual orientation and gender identity, many gay and transgender people struggle with their identities. Rates of depression, substance abuse, and suicide are all higher in this group. Providing mental health support and counseling to those in transition is critical. Finally, transgender patients who are undergoing gender affirmation require sensitive medical health care, including surgical and hormonal treatment.
Sexual violence can be defined as any unwanted or non-consensual sexual activity. It ranges from sexual harassment to touching to rape. It affects women more than men and is widespread: 1 in 4 women report being victims of sexual violence at the hands of a partner, and as many as 1 in 3 girls report their first sexual contact as being violent. Sexual violence has lasting physical and emotional consequences for victims, but educating both girls and boys can prevent violence. Care for those who have endured sexual violence includes counseling and mental health support, medical care, and legal support.
Sexuality is more than a reproductive requirement -- it is a form of expression and identity. Sexual health blends all these aspects of experience together and helps people lead sexually fulfilling lives.
Dr. Leonard Nai-En Chen, MD graduated from Taipei Medical University in 1997. He completed residency at Georgetown University Hospital. He is certified by the Board Certification and has a state license in Maryland.
Medical School: Taipei Medical University (1997)
Residency: Georgetown University Hospital (2018)
Board Certification: Board Certification
Licensed In: Maryland
Dr. Leonard Nai-En Chen, MD is associated with these hospitals and organizations:
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Dr. Leonard Chen is a blood banking & transfusion medicine specialist. After attending Taipei Medical University and Georgetown University School of Medicine, he completed his residency training at Georgetown University Hospital. He is affiliated with MedStar Washington Hospital Center.