Wound Healing and Ulcers of the Skin - part 7 ppsx

... reddish brown, and often whitish pink, and the border of lesion is at least in part a During much of thi s time, the precursor stage, lentigo maligna, is confined to the epidermis. Source: ... Lentigo maligna melanoma Sun- exposed surfaces, 70 5–20 a or longer In flat portions, shades of brown and tan particularly malar region of cheek and temple p...

Ngày tải lên: 07/07/2014, 01:20

... origin of primary melanoma and because of the large and varied surface of the nevus. Prophylactic excision early in life can be accomplished by staged removal with coverage by split-thickness skin ... papillomatous surface. The border is sharp, and lesions may be oriented along lines of skin cleavage. Follicular hyper- and hypopigmentation may coexist in a salt -a...

Ngày tải lên: 07/07/2014, 01:20

... on the lower lip. Sun-exposed skin such as the head, neck, hands, and arms are other typical sites of involvement. C. Actinic keratoses consists of hyperkeratotic erythematous papules and ... sun-exposed skin. They arise in middle- aged to older adults and have some potential for malignant transformation. D. Metastatic carcinoma to the skin is characterized by infl...

Ngày tải lên: 07/07/2014, 01:20

... blacks, and East Asians have rates 10–20 times lower than lighter- skinned whites. In keeping with the role of sun exposure, the incidence is inversely correlated with the latitude of residence; ... Cancer of the Skin Melanoma Pigmented lesions are among the most common findings on skin examination. The challenge is to distinguish cutaneous melanomas, which may be...

Ngày tải lên: 07/07/2014, 01:20

... areas; the back is the most common site, but dysplastic nevi may also be seen on the scalp, breast s, and buttocks Generally on the sun- exposed surfaces of the skin above the waist; the scalp, ... lymph nodes and palpation of the abdominal viscera are part of the staging examination for suspected melanoma. The patient should be advised to have other...

Ngày tải lên: 07/07/2014, 01:20

... cells and minimize possible local recurrence. The appropriate width of the margin is a source of controversy. A World Health Organization trial that prospectively randomized between 1- and 3-cm ... feasible (such as the face, hands, or feet), an incisional biopsy through the most nodular or darkest area of the lesion is acceptable; this should include the vertical...

Ngày tải lên: 07/07/2014, 01:20

... behavior of the tumor. These include the size, location, and degree of histologic differentiation of the tumor as well as the age and physical condition of the patient. Surgical excision, MMS, and ... modalities with higher cure rates and lower morbidity. In patients with a history of skin cancer, long-term follow-up for the detection of recurrence, metast...

Ngày tải lên: 07/07/2014, 01:20

... Jr et al: The histogenesis and biologic behavior of primary human malignant melanoma of the skin. Cancer Res 29 :70 5, 1969 [PMID: 577 3814] Friedman RI et al (eds): Cancer of the Skin. Philadelphia, ... in the 1990s: The continued importance of early detection and the role of physician examination and self- examination of the skin. CA Cancer J Clin 1:20...

Ngày tải lên: 07/07/2014, 01:20

... outside of the area of the prostate bed and is unlikely to be controlled with radiation therapy. disease. The practice evolved from studies of predominantly elderly men with well-differentiated ... evidence of disease on scan. For these patients the central issue is whether the rise in PSA results from persistent disease in the primary site, systemic disease, or...

Ngày tải lên: 07/07/2014, 02:20

... mortality in 20 US cities, 198 7- 1 994. The New England Journal of Medicine 343: 174 2-1 74 9. Emission and Formation of Fine Particles from Hardcopy Devices: the Cause of Indoor Air Pollution 123 ... night, there were significant decrease in the particulate numbers and mass concentrations from the working hours of the machine during the day. While durin...

Ngày tải lên: 19/06/2014, 14:20