Can DFSP be seen on ultrasound?
On ultrasound, DFSP typically presents as (1) well-marginated, (2) hypoechoic subcutaneous tumor with (3) a slightly lobulated border, (4) discrete areas of increased hypoechogenicity along with (5) small echogenic foci, and (6) central and peripheral vascularity, as well as (7) posterior enhancement.
How rare is DFSP?
Dermatofibrosarcoma Protuberans (DFSP) It is a rare type of sarcoma with low-to-intermediate grade malignancy. It compromises less than 0.1% of all cancers and about 1% of all soft tissue sarcomas.
Can DFSP come back?
Dermatofibrosarcoma protuberans (DFSP) is very rare tumor of dermis layer of skin with the incidence of only 1 case per million per year. DFSP rarely leads to a metastasis (Less than 5% have metastasis), but DFSP can recur locally.
What is Dermatofibrosis?
Dermatofibromas are small, noncancerous (benign) skin growths that can develop anywhere on the body but most often appear on the lower legs, upper arms or upper back. These nodules are common in adults but are rare in children. They can be pink, gray, red or brown in color and may change color over the years.
What is Dermatofibrosarcoma?
Dermatofibrosarcoma protuberans (DFSP) is a very rare type of skin cancer that begins in connective tissue cells in the middle layer of your skin (dermis). Dermatofibrosarcoma protuberans may at first appear as a bruise or scar. As it grows, lumps of tissue (protuberans) may form near the surface of the skin.
How is DFSP treated?
Surgical excision remains the mainstay of treatment for dermatofibrosarcoma protuberans (DFSP). Despite controversy, Mohs micrographic surgery has been increasingly accepted as the treatment of choice, while others advocate wide local excision.
Can dermatofibroma be malignant?
Such variants, or any indeterminant dermatofibroma, might be regarded as potentially malignant lesions. In these exceptional cases, pulmonary and nodal metastases were seen most commonly, some patients developed multiple satellite nodules, and deaths have occurred.
What is the recurrence rate of DFSP?
Dermatofibrosarcoma protuberans (DFSP) is a rare soft tissue tumour with an incidence rate of 4.2–4.5 cases per million persons per year and local recurrence rates up to 60% [2]. It grows slowly and presents usually as a nodular superficial lesion on the trunk or the extremities.
What is a Lentigine?
A lentigo (plural: lentigines) is a spot on the skin that is darker (usually brown) than the surrounding skin. Lentigines are more common among Caucasian patients, especially those with fair skin, but can occur in anyone.
Is there a proof of correctness for the DFS algorithm?
Although a proof of correctness for the BFS algorithm is given, there isn’t one any for the DFS in the book. So I was courious about how it can be shown that DFS visits all the nodes.
What kind of radiotherapy is used for DFSP?
Objectives: Dermatofibrosarcoma protuberans (DFSP) is a rare indolent cutaneous tumor. In this analysis, we assess the effectiveness of postoperative radiotherapy (RT) in treating patients with DFSP. Methods: From 1983 to 2011, 14 patients with DFSP were treated with RT at our institution.
What should be included in a written DFSP policy?
The written policy should describe safety requirements; annual employee education and supervisor training; alcohol and other drug testing; and employee assistance, which along with the written DFSP policy, comprise the key integrated elements of any effective DFSP program.
Is there a cure for skin cancer DFSP?
The cause of DFSP is unknown, but injury to the affected skin may be a predisposing factor. Treatment usually involves surgically removing the tumor. If the tumor is unable to be removed completely, additional therapy may be needed. Regular follow-up is important to monitor for recurrence. [1] [2] [3]