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Biomedical subjects

L G Owen

Publications and source records attributed to L G Owen.

18 recordsLinked to original sources
PubMed1992

Atypical melanocytic nevi. Clinical and histopathologic predictors of residual tumor at reexcision.

BACKGROUND: The appropriate method for surgical management of melanocytic lesions with disordered architecture and melanocytic atypia (formerly dysplastic nevi) has been controversial. Physicians often reexcise these lesions after primary removal because of their potential relation to malignant melanoma. The outcomes of these reexcisions and the original biopsy specimens have not been previously examined. OBJECTIVE: The purpose of this study was to examine reexcision specimens and their respective original specimens to determine whether there were any characteristics predictive of the presence of residual nevus cells (RNCs) on reexcision. METHODS: One hundred eighty-nine reexcision specimens of atypical melanocytic lesions were evaluated for this study. The original specimens were examined for specific histopathologic features without knowledge of the findings on reexcision. Clinical characteristics were also examined. RESULTS: Of the 189 reexcision specimens, 47 (24.9%) contained RNCs. The proportion of specimens with RNC on reexcision was significantly greater if the original lesion was removed by punch biopsy rather than by shave or elliptical excision (38.3% vs 22.0% vs 10.5%, respectively; p < 0.03). Lesions located on the chest had a higher likelihood of RNCs than those on the back or leg (52.2% vs 21.7%; p = 0.009; 52.2% vs 9.7%, p < 0.002, respectively). Mean age was greater in those with RNCs at reexcision than those without (43.6 vs 37.9 years, respectively; p < 0.0001). The proportion of specimens with RNCs at reexcision was greater in those that had both lateral margins involved than in those that had nevus cells in either one or neither of the lateral margins in the original biopsy specimens (39.7% vs 24.0% vs 7.8%, respectively; p = 0.0005). One of the 189 reexcision specimens (0.5%) contained melanoma, although the original histopathologic diagnosis was an atypical melanocytic nevus. CONCLUSION: We identified several clinical and histopathologic factors that are strongly associated with the presence of RNCs on reexcision.

Adolescent↗
PubMed1979

Cutaneous horns: a histopathologic study.

We report a series of 230 cutaneous horns, of which fewer than one fourth were frankly malignant. Actinic keratoses were the lesions most commonly found underlying cutaneous horns (37.39%). Cutaneous horns overlying a benign lichenoid keratosis, epidermolytic hyperkeratosis, trichilemmoma, an epidermal inclusion cyst, and a benign fibroma are reported. Three cases were nondiagnosable because of inadequate biopsies that were too superficial to show the base of the lesion.

Carcinoma, Squamous Cell↗
PubMed1979

Zosteriform inflammatory metastatic carcinoma.

A 57-year-old man presented with chest wall lesions and swelling of his left arm. The rapid onset of vesicular lesions in a dermatomal distribution resulted in an initial diagnosis of herpes zoster. Cutaneous biopsy revealed adenocarcinoma and further evaluation revealed a primary source of pulmonary adenocarcinoma. Lymphatic spread of tumor cells is the most likely source of the zosteriform skin lesions, but other possibilities are discussed.

Adenocarcinoma↗
PubMed1978

Cutaneous angiosarcoma of the hip.

An elderly patient is presented who developed a fatal angiosarcoma of the hip about ten years after surgery and radiation for a uterine malignancy. She developed a metastasis of the uterine tumor, requiring additional radiation, which led to aseptic necrosis of the hip and chronic joint and soft tissue infection of the hip from a joint prosthesis. Subsequently she developed chronic lymphedema of the hip and finally the cutaneous angiosarcoma in this area. Any or all of these factors might bear a causative relationship to the angiosarcoma, but none can be proved.

Female↗
PubMed1978

Inflammatory linear verrucose epidermal nevus.

We treated three patients with inflammatory linear verrucose epidermal nevus. The lesions were either verrucose or psoriasiform and all had an inflammatory component. Histologic features included psoriasiform acanthosis with spongiosis and parakeratosis. Features that distinguish this entity and the differential diagnoses are discussed.

Adult↗
PubMed1978

Neurocutaneous syndromes.

The neurocutaneous syndromes are a diverse group of diseases characterized by widespread abnormalities in structures of ectodermal origin, including the skin, eye, and central and peripheral nervous systems. These syndromes are particularly interesting to the clinician because they often present with cutaneous signs at birth or very early in life. These skin markers may be clues to widespread abnormality that may later develop in the nervous system and other areas of the body, making early diagnosis from careful assessment of cutaneous signs a particularly challenging task. Six of the most common of these syndromes are reviewed.

Ataxia Telangiectasia↗
PubMed1977

Macrodactyly and epidermal nevus.

A case is presented of a child with the two congenital anomalies of macrodactyly and epidermal nevus. Macrodactyly was noted at birth; nevus unius lateris became apparent at three months. The chance association of these two rare anomalies as individual sporadic occurrences is exceedingly unlikely. The case is presented as a possible syndrome entity, if other case documentation exists.

Adult↗
PubMed1975

Topical 5-fluorouracil treatment of superficial basal cell epithelioma. A light and electron microscopic study.

A 27-year-old patient developed superficial basal cell epitheliomas approximately 20 years after taking Fowler's solution. One of the lesions was successfully treated with topical 2% 5-fluorouracil soultion under occlusion. Sequential biopsies of the lesion before, during and after therapy were examined by light and electron microscopy, and the changes at various stages are described. Changes occurred only in tumor cells and adjacent epidermis, and only after occlusion of 5-FU. After one week of occlusive therapy, focal discontinuities in the basal lamina and intercellular spaces were wider with reduction and condensation of tonofilaments. Mitochondrial degeneration was seen along with irregularities in nucleoli. These changes were most prominent after two weeks of occlusive therapy, and many degenerating keratinocytes were seen detached from other cells. One month after cessation of therapy, the entire area was excised, and no evidence of tumor was seen.

Administration, Topical↗
PubMedDate not supplied

Cutaneous polyarteritis nodosa in a patient with ulcerative colitis.

Skin disease is common in patients with inflammatory bowel disease. Described herein is a child with ulcerative colitis and cutaneous polyarteritis nodosa. Review of the literature suggests cutaneous polyarteritis must be considered as another skin lesion associated with inflammatory bowel disease. Cutaneous polyarteritis tends to run a chronic relapsing course independent of bowel disease, however.

Child↗