Skin cancers are cancers that arise from the skin. They are due to the development of abnormal cells that have the ability to invade or spread to other parts of the body. It occurs when skin cells grow uncontrollably, forming malignant tumors. The primary cause of skin cancer is prolonged exposure to ultraviolet (UV) radiation from the sun or tanning devices. Skin cancer is the most commonly diagnosed form of cancer in humans. There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. The first two, along with a number of less common skin cancers, are known as nonmelanoma skin cancer (NMSC). Basal-cell cancer grows slowly and can damage the tissue around it but is unlikely to spread to distant areas or result in death. It often appears as a painless raised area of skin that may be shiny with small blood vessels running over it or may present as a raised area with an ulcer. Squamous-cell skin cancer is more likely to spread. It usually presents as a hard lump with a scaly top but may also form an ulcer. Melanomas are the most aggressive. Signs include a mole that has changed in size, shape, color, has irregular edges, has more than one color, is itchy or bleeds.
Dermatology is the branch of medicine dealing with the skin. It is a speciality with both medical and surgical aspects. A dermatologist is a specialist medical doctor who manages diseases related to skin, hair, nails, and some cosmetic problems.
Basal-cell carcinoma (BCC), also known as basal-cell cancer, basalioma or rodent ulcer, is the most common type of skin cancer. It often appears as a painless raised area of skin, which may be shiny with small blood vessels running over it. It may also present as a raised area with ulceration. Basal-cell cancer grows slowly and can damage the tissue around it, but it is unlikely to spread to distant areas or result in death.
Melanoma is the most dangerous type of skin cancer; it develops from the melanin-producing cells known as melanocytes. It typically occurs in the skin, but may rarely occur in the mouth, intestines, or eye.
Dermatofibrosarcoma protuberans (DFSP) is a rare locally aggressive malignant cutaneous soft-tissue sarcoma. DFSP develops in the connective tissue cells in the middle layer of the skin (dermis). Estimates of the overall occurrence of DFSP in the United States are 0.8 to 4.5 cases per million persons per year. In the United States, DFSP accounts for between 1 and 6 percent of all soft-tissue sarcomas and 18 percent of all cutaneous soft-tissue sarcomas. In the Surveillance, Epidemiology and End Results (SEER) tumor registry from 1992 through 2004, DFSP was second only to Kaposi sarcoma.
Merkel cell carcinoma (MCC) is a rare and aggressive skin cancer occurring in about three people per million members of the population. It is also known as cutaneous APUDoma, primary neuroendocrine carcinoma of the skin, primary small cell carcinoma of the skin, and trabecular carcinoma of the skin. Factors involved in the development of MCC include the Merkel cell polyomavirus, a weakened immune system, and exposure to ultraviolet radiation. Merkel cell carcinoma usually arises on the head, neck, and extremities, as well as in the perianal region and on the eyelid. It is more common in people over sixty years old, Caucasian people, and males. MCC is less common in children.
Mohs surgery, developed in 1938 by a general surgeon, Frederic E. Mohs, is microscopically controlled surgery used to treat both common and rare types of skin cancer. During the surgery, after each removal of tissue and while the patient waits, the tissue is examined for cancer cells. That examination dictates the decision for additional tissue removal. Mohs surgery is the gold standard method for obtaining complete margin control during removal of a skin cancer using frozen section histology. CCPDMA or Mohs surgery allows for the removal of a skin cancer with very narrow surgical margin and a high cure rate.
Frederic Edward Mohs was an American physician and general surgeon who developed the Mohs micrographic surgery (MMS) technique in 1938 to remove skin cancer lesions while still a medical student at the University of Wisconsin–Madison. The Mohs procedure is considered the best method for treating certain types of skin cancer, because it has very high cure rates for even high-risk lesions, combined with maximal preservation of healthy tissues.
Atypical fibroxanthoma (AFX) of the skin is a low-grade malignancy related to malignant fibrous histiocytoma, which it resembles histologically. Atypical fibroxanthoma manifests as a hard, pink or red papule or nodule that grows over the course of several months and may bleed or ulcerate. They typically occur on the head and neck. Atypical fibroxanthoma is usually asymptomatic.
Sebaceous carcinoma, also known as sebaceous gland carcinoma (SGc), sebaceous cell carcinoma, and meibomian gland carcinoma, is an uncommon malignant cutaneous (skin) tumor. Most are typically about 1.4 cm at presentation. SGc originates from sebaceous glands in the skin and, therefore, may originate anywhere in the body where these glands are found. SGc can be divided into 2 types: periocular and extraocular. The periocular region is rich in sebaceous glands making it a common site of origin. The cause of these lesions in the vast majority of cases is unknown. Occasional cases may be associated with Muir-Torre syndrome. SGc accounts for approximately 0.7% of all skin cancers, and the incidence of SGc is highest in Caucasian, Asian, and Indian populations. Due to the rarity of this tumor and variability in clinical and histological presentation, SGc is often misdiagnosed as an inflammatory condition or a more common neoplasm. SGc is commonly treated with wide local excision or Mohs micrographic surgery, and the relative survival rates at 5 and 10 years are 92.72 and 86.98%, respectively.
David J. Leffell, MD, was born in 1956 in Montreal, Canada and educated at McGill University and Yale University. He is founder and chief of the Dermatologic Surgery Program at Yale School of Medicine. Leffell is an internationally recognized expert in skin cancer and the Mohs technique, plastic reconstruction, and new technologies in dermatology. He specializes in the diagnosis, treatment, and prevention of melanoma and nonmelanoma skin cancer. He is the David Paige Smith Professor of Dermatology and Surgery, chief of Dermatologic Surgery and Cutaneous Oncology, and former Deputy Dean for Clinical Affairs at Yale University School of Medicine. In January 2012, Dr. Leffell stepped down as chief executive officer of the Yale Medical Group, after 15 years of leadership of the organization. He serves on the board of Validus Pharmaceuticals and is a trustee of The Hopkins School, one of America's oldest independent schools.
Microcystic adnexal carcinoma (MAC) is a rare sweat gland cancer, which often appears as a yellow spot or bump in the skin. It usually occurs in the neck or head, although cases have been documented in other areas of the body. Most diagnosis occur past the age of 50. Although considered an invasive cancer, metastasis rarely occurs. If the tumor spreads, it can grow and invade fat, muscles, and other types of tissue. Main treatments are wide local excision or Mohs micrographic surgery, which ensures that most, if not all, cancer cells are removed surgically.
Malignant pilomatricoma is a cutaneous condition characterized by a locally aggressive tumor composed of hair-matrix cells.
TheSkin Cancer Foundation (SCF), founded in 1979, aims to "empower people to take a proactive approach to daily sun protection and the early detection and treatment of skin cancer." The organization has developed a mix of programs and resources that serve the needs of a diverse audience. SCF disseminates information via its digital resources, public service campaigns and community programs, including Destination: Healthy Skin. The foundation's professional membership includes dermatologists, Mohs surgeons, plastic surgeons and other medical professionals working to fight skin cancer. Headquartered in New York City, the foundation is a 501(c)(3) public charity.
The American College of Mohs Surgery is a membership-based organization of surgeons who are fellowship-trained (FACMS) in Mohs surgery, a technique that removes skin cancer in stages, one tissue layer at a time. The ACMS is the oldest and largest professional membership organization for Mohs surgeons.
The Journal of Drugs in Dermatology is a monthly peer-reviewed medical journal of dermatology published by Sanovaworks. The journal was established in 2002 by Mohs surgeon Perry Robins, founder of the Skin Cancer Foundation. It is the flagship publication of Sanovaworks, publisher of Derm-in-Review and Next Steps, as well as the sponsor of JDD Podcasts and two annual medical specialty conferences, Skin of Color Update (SOCU), and the ODAC Dermatology Aesthetic and Surgical (ODAC) conferences.
June K. Robinson is an American dermatologist, academic and researcher. She is a Research Professor of Dermatology at Northwestern University’s Feinberg School of Medicine.
Günter Burg is a German dermatologist. Born in Mayen, Germany, he holds German and Swiss citizenship. He has been married to Dr. Doris Burg-Nicklas, a neurologist, since 1968. They have two sons: Andreas and Thomas.
Kavita Mariwalla is a dermatologist and author based in Long Island, New York. She is acknowledged as a leading scholar in skin cancer and aesthetic and medical dermatology and is the president-elect of the American Society for Dermatologic Surgery.
Dermatologic surgical procedures are treatments aimed at managing a wide range of medically necessary and cosmetic conditions, with a long history dating back to ancient times.
