Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Buttocks”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 559 records · Page 31Linked to original sources
PubMed2004

Gluteal compartment syndrome after abdominal aortic aneurysm repair.

A 66-year-old man underwent emergency surgery for a ruptured abdominal aortic aneurysm associated with right common and internal iliac aneurysms. Postoperatively, his right buttock was distended and tender to compression. A CT scan revealed an extremely swollen right gluteus maximus with decreased density. Macromyoglobinuria was noted, and creatine kinase and myoglobin were elevated: 87,800 IU/l and 144,300 ng/ml, respectively. Renal function had deteriorated and he was treated with hemodialysis until the 15th postoperative day. The patient recovered without any discomfort to the buttock or intermittent claudication. To our knowledge this is the first documented case of gluteal compartment syndrome after the repair of an abdominal aortic aneurysm.

Aged↗
PubMed2000

A full-UV spectrum absorbing daily use cream protects human skin against biological changes occurring in photoaging.

BACKGROUND: There is overwhelming evidence that exposure of human skin to ultraviolet radiations (UVR) leads to the development of cutaneous photoaging and eventually to neoplasia. This study was designed to evaluate in humans the protection afforded by a daily use cream containing a photostable combination of UVB and UVA absorbers (Uvinul N539, Parsol 1789 and Mexoryl SX) providing a continuous absorption through the entire UV spectrum, against damages induced by repeated daily exposure to solar simulated radiation (SSR). METHODS: Buttock skin of 12 healthy volunteers was exposed 5 days per week for 6 weeks to one minimal erythema dose of solar simulated radiation per exposure. The following parameters in treated and untreated skin were evaluated: erythema, pigmentation, skin hydration, skin microtopography, histology and immunochemistry, and collagen and metalloproteinase (MMP) mRNA levels. RESULTS: In SSR exposed unprotected skin sites, we observed melanization and changes in the skin hydration and microtopography. The epidermis revealed a significant increase in stratum corneum and stratum granulosum thickness. In the dermis, an enhanced expression of tenascin and a reduced expression of type I pro-collagen were evidenced just below the dermal epidermal junction. Although we were unable to visualize any change in elastic fibers in exposed buttock skin, a slightly increased deposition of lysozyme and alpha 1 antitrypsin on these fibers was observed using immunofluorescence techniques. Furthermore, types I and III collagen mRNA were slightly increased and a significant enhancement (up to 2.8-fold) of MMP-2 mRNA level was observed. The daily use cream was shown to prevent all these biological changes. CONCLUSION: Our results show in vivo that an appropriate full-UV spectrum product significantly reduces the solar-UV-induced skin damage, demonstrating the benefit of daily photoprotection.

Acrylates↗
PubMed2001

Urocanic acid isomers in patients with non-melanoma skin cancer.

BACKGROUND: Cis-urocanic acid (cis-UCA), formed from the naturally occurring trans-isomer in the epidermis on ultraviolet (UV) radiation, initiates some of the changes leading to UV-induced immunosuppression, but its role in cutaneous carcinogenesis has not been fully investigated. OBJECTIVES: To measure the concentration of UCA isomers in the photoexposed and non-photoexposed skin of patients with multiple non-melanoma skin cancer (NMSC), enrolled in different periods of the year, in comparison with control subjects. PATIENTS/METHODS: UCA isomers were determined by high-performance liquid chromatography analysis in samples from the outer arm (photoexposed site) and buttock (non-photoexposed site) obtained from 20 patients and 19 controls during the winter period (October to April), and from five patients and 11 controls during the summer period (June to September). RESULTS: In the winter months, no difference was found between patients and controls in the concentration of UCA or the percentage of cis-UCA in either site. In the summer months, the percentage of cis-UCA in the buttock of patients and controls was similar but it was significantly higher in the arm of the controls (42%) than in the patients (17%). CONCLUSIONS: We conclude that different behaviour regarding sun exposure is the most likely explanation for these results, and that the concentration of UCA and its isomers does not reflect a tendency for individuals to develop NMSC.

Adult↗
PubMed2002

Dowling-Degos disease associated with squamous cell carcinomas on the dappled pigmentation.

We report the first case of Dowling-Degos disease associated with squamous cell carcinomas (SCCs) in the pigmented area of Dowling-Degos disease. A 64-year-old Japanese man manifested dappled pigmentation unusually localized to the buttocks, and two pigmented adenoid SCCs had developed on his left pigmented buttock. The other findings of Dowling-Degos disease were comedone-like lesions on the face and back, a finger-like fibroma in the right popliteal fossa, dystrophic fingernails, and a large number of seborrhoeic keratosis-like lesions predominantly on the flexural areas. Another unique clinical feature was the lack of vellus hair on the whole body surface. In addition to thin branching and elongation of rete ridges with basal hyperpigmentation, immature hair follicles surrounded by fibrosis and a lace-like pattern of the hair follicle epithelia were observed histologically. These epithelial hamartomatous features were consistent with Dowling-Degos disease. We speculate that the SCCs developed in relation to an underlying naevoid anomaly in pilosebaceous epithelia of Dowling-Degos disease.

Buttocks↗
PubMed1998

Different patterns of in vitro acantholysis in normal human skin samples explanted from different sites of the body.

BACKGROUND: The factors that contribute to a preferential anatomic localization of pemphigus lesions are not well known. In particular, the question arises as to whether certain skin areas may be more acantholysis-prone than others. OBJECTIVE: To verify whether, in pemphigus patients, a different susceptibility to acantholysis exists among different cutaneous regions, the technique of tissue cultures was used. METHODS: Normal human skin explants from two distinct anatomic regions (back and buttocks) of two former pemphigus patients were cultured in vitro in the presence of enalapril (6 mM) or cystamine (10 mM), two substances with a proven biochemical acantholytic effect. After 4 days of culture, the tissues were processed for standard histology. RESULTS: Diffuse acantholysis, with large intraepidermal splits, was observed in the explants taken from the backs of both subjects and cultured with either enalapril or cystamine. Mild to moderate acantholytic changes were detected in the explants taken from the buttocks of both subjects and cultured with either enalapril or cystamine. No structural changes were seen in the control cultures. CONCLUSIONS: Pemphigus patients present different thresholds of acantholysis in different areas of their bodies. This might explain, at least in part, certain preferential anatomic localizations of pemphigus lesions.

Acantholysis↗
PubMed2000

Subcision: a treatment for cellulite.

BACKGROUND: Cellulite is a common clinical condition, with few proven effective therapeutic options. Subcision is a surgical technique that is useful in treating advanced degree cellulite. This study was designed to determine the usefulness of the treatment of cellulite by subcision. METHODS: From January 1995 to January 1998, 232 female patients, aged 18-52 years, with cellulite on the thighs and buttocks were treated on an outpatient basis by the subcision technique. RESULTS: In the postoperative period, all the patients had pain, bruises, and hemosiderosis. An improvement in the surface depressions was observed and the patients reported a high degree of satisfaction. CONCLUSIONS: This outpatient procedure is effective in the correction of surface depressions on the thighs and buttocks, clinically classified as cellulite.

Adipose Tissue↗
PubMed2001

Recreation of the natal cleft by reverse Z-plasty.

The use of Z-plasties in the closure of elliptical or circular defects is not uncommon. We present a patient in whom a double Z-plasty was performed in order to close a sacral pressure sore. The patient returned 21 years later seeking aesthetic improvements of the resultant obliteration of the natal cleft and the soft tissue and skin redundancy in the central inferior aspect of the buttocks. We met this challenge with a practical solution. The triangular flaps of the Z-plasties were returned to their original positions. This resulted in a natural shortening of the central portion of the buttock and the recreation of the natal cleft. The postoperative result was aesthetically pleasing. We report this unusual case and discuss the geometry behind the reversal of the Z-plasties as the solution to this problem. In addition, a novel interpretation of Z-plasties is presented.

Adult↗
PubMed2002

Atheroembolization: a harmful complication of therapeutic internal iliac artery occlusion.

Coil embolization of the internal iliac artery (IIA) for proper endovascular treatment of aortoiliac aneurysms is a procedure with an acceptable morbidity rate consisting of buttock claudication in 12% to 55% and erectile dysfunction in 1% to 13%. Atheroembolic complications in this context are not yet reported. We present a case with gangrene of the prepuce and focal cutaneous necrosis of the ipsilateral buttock and foot after coil embolization of one IIA. Multiple atheroemboli were found with the histopathologic examination of the excised prepuce. Atheroembolization is a rare complication of therapeutic IIA occlusion, and the ischemic sequels can be severe because of the coincidence of atheroembolization and occlusion of the main supplying artery.

Angiography↗
PubMed2003

Distal internal iliac artery embolization: a procedure to avoid.

OBJECTIVES: Internal iliac artery (IIA) coil embolization as an adjunct to endovascular stent grafting (ESG) is common practice for treating abdominal aortic aneurysm (AAA) in patients with a substantially enlarged common iliac artery requiring extension of the stent-graft limb into the external iliac artery. The literature describing pelvic ischemia in association with IIA coil embolization contains conflicting reports of symptom severity. We studied IIA occlusion outcome as a function of coil placement in the IIA. METHODS: From August 1997 to March 2002, 20 patients with AAA underwent ESG with unilateral IIA coil embolization. Coils were placed proximal to the first branch of the IIA in 8 patients and distal to the first branch in 12 patients. Symptoms of pelvic ischemia and mid-term outcome were studied. RESULTS: Patients included 18 men and 2 women with mean age of 70(1/2) years (range, 53-86 years). Mean diameter of AAA was 54.4 mm (range, 38-80 mm), and of common iliac artery was 24.2 mm (range, 15-48 mm). Ten patients (50%) had new onset of symptoms of pelvic ischemia after endograft procedures: 1 of 8 patients (13%) with proximal IIA embolization had buttock claudication, and 9 of 12 patients (75%) with distal IIA embolization had pelvic ischemic symptoms, including buttock claudication in 8 and impotence in 1 (P =.02, Fisher exact test). No colonic ischemia occurred in this series. At 12-month follow-up, 4 patients with distal IIA embolization were symptom-free. At further follow-up to 24 months, 4 patients remained significantly limited with symptoms of claudication. CONCLUSIONS: A significantly higher incidence of symptoms of pelvic ischemia occurred with more distal placement of coils for IIA embolization. Failure to control for extent of coil placement may account for the apparently conflicting results in published studies. IIA coil embolization should be performed as proximal as possible to prevent interference with pelvic collateral circulation.

Aged↗
PubMed2006

Necrotizing fasciitis.

Necrotizing fasciitis is an uncommon, rapidly spreading infection, affecting primarily the deep fascia, which may result in secondary necrosis of the subcutaneous tissue, fascia and muscle. We report a patient that had the cardinal features; namely, excruciatingly painful lesions, demonstration of gas in the tissue and an obnoxious foul odor, prominent erythema, induration, patchy necrosis, and loss of sensation in the left buttock and thigh. Its onset probably followed inadvertent trauma/injury of the left buttock. Corroborative microscopic pathology confirmed the diagnosis. Debridement and intensive supportive therapy comprising antibiotics, analgesics and fluids were given. The outcome of the therapy was gratifying.

Aged↗
PubMed1993

Using seat contour measurements during seating evaluations of individuals with SCI.

Measuring the shape of the buttock-cushion interface has been used successfully in research to study tissue loading and as a means to fabricate custom contoured cushions. Seat contours are also able to provide useful clinical information on the weight-bearing surface of the cushion, which can be used to address posture. This article offers specific case studies that demonstrate how the analysis of seat contours can be used to identify pelvic tilt, pelvic obliquity, and areas of high loading. Seat contour measurements complement other clinical measures, such as seat interface pressures and general postural assessments, to form a more complete picture of the buttock-cushion interface. They have become useful in the clinical management of various pressure and posture problems experienced by individuals with spinal cord injury and other wheelchair users.

Adolescent↗
PubMed1979

Fatty acid composition of human adipose tissue from two anatomical sites in a biracial community.

This report describes the age-race specific distribution of fatty acids in samples of adipose tissue taken from both the perirenal and buttock areas of 406 men autopsied in a community pathology study. This analysis of fatty acid composition of adipose tissue is part of a comprehensive investigation of atherosclerosis and coronary heart disease in a community setting. The findings from analysis of fatty acids are expressed as mass percentage of all fatty acids in adipose tissue triglyceride. For each age-site subgroup, white men tended to have higher mean percentages of myristic acid and palmitoleic acid than did black men. The converse was found for stearic acid. In the younger age groups only, the whites showed a higher mean percentage of linoleic acid than the blacks in adipose tissue from both sites. Age was associated with a decrease in mean percentage of stearic acid and an increase in mean percentage of oleic acid and palmitoleic acid in both races. The older age group had a lower mean percentage of linoleic acid than the younger age groups. The mean percentages of myristic, palmitic, and stearic acids were higher in perirenal tissue, while the mean percentages of palmitoleic and oleic acids were higher in buttock adipose tissue in both races.

Adipose Tissue↗
PubMed1997

Subcutaneous ("inverted") verrucous carcinoma with bone invasion.

Verrucous carcinoma (VC) is a low-grade cutaneous squamous carcinoma which often presents on the foot where it is known as carcinoma cuniculatum. Three cases of VC on the buttock have previously been documented. We describe a highly unusual example of VC involving the buttock with extensive iliac bone erosion, and with the apparently unique feature of being totally subcutaneous.

Aged↗
PubMed1982

Closure of chronic wounds of the perineal and sacral regions using the gluteal thigh flap.

A new flap of the buttock and posterior thigh has been developed for closure of wounds of the perineal and postsacral regions. Flap anatomy and operation technique are described. Five patients with difficult wounds were selected to demonstrate the versatility and range of this flap. In 40 patients under 65 years of age with a variety of buttock and perineal wounds, there have been no appreciable wound-healing problems with use of this flap.

Adult↗
PubMed1999

Relation between pain location and disc pathology: a study of pain drawings and CT/discography.

OBJECTIVE: The purpose of this study was to determine whether pain location indicated in pain drawings was related to the specific lumbar disc level(s) that was abnormal in appearance and painful upon discographic injection. DESIGN: Data were collected prospectively. SETTING: This study was conducted in a spine specialty clinic. PATIENTS: The study group consisted of 187 patients (118 men, 69 women; mean age = 37.2 years, range = 18-62 years) with low back pain with or without leg pain. All patients were undergoing computed tomography (CT)/discography at the three lowest lumbar levels for diagnostic purposes. INTERVENTIONS: Pain drawings were completed the day of but prior to undergoing discography. Discographic pain responses were recorded with respect to the similarity to the patient's clinical symptoms. Pain drawings were classified based on the presence or absence of pain in five areas: low back and/or buttocks, posterior thigh, posterior leg, anterior thigh, and anterior leg. The drawings were scored with the system described by Ransford et al. (1976, Spine 1: 127-34), and those likely to be indicative of psychological problems were analyzed separately (n = 43). OUTCOME MEASURES: Results were determined by analyzing the relation between the location of pain in the drawings and the specific lumbar disc level(s) found to be painful and disrupted by discography. RESULTS: There was a significant relation between pain location indicated in the drawing and the lumbar disc level(s) identified as clinically painful and disrupted by CT/discography (p < 0.05, chi-square). Pain limited to the low back and buttocks was frequently associated with the absence of disc pathology (58.3%). When pain in the posterior thigh or leg was present but there was no pain in the anterior drawing, patients frequently had a positive L5-S 1 disc (> or =75%). In patients with anterior thigh pain, with or without posterior thigh or leg pain, the L4-5 disc was frequently symptomatic (>63%). The pattern of no posterior thigh or leg pain but with pain radiating into the leg anteriorly was most commonly associated with the L3-4 disc (71.4%). CONCLUSIONS: The results of this study indicate that pain drawings may be helpful in identifying which specific discs are associated with pain complaints. As with any evaluation, the drawings should be considered in combination with findings from other assessments.

Adolescent↗
PubMedDate not supplied

Gluteal pouching: a complication of perineal burn scar contracture. A case report.

Burns to the buttocks are rare. Gluteal pouching, a complication of burn scar contractures of the buttocks, with total effacement of the gluteal folds and hooding of the rectum is described. A barium enema is helpful for preoperative evaluation. Recreation of the gluteal folds and unhooding of the rectum can be performed effectively without skin grafting.

Burns↗
PubMed1983

Staged transfer of a free microvascular latissimus dorsi myocutaneous flap using saphenous vein grafts.

The use of long vein grafts in the axilla adds a new dimension to the versatility of the latissimus dorsi myocutaneous flap. When suitable recipient vessels are not available for a microvascular anastomosis, long vein grafts can be used in the axilla to double the arc of rotation of the flap, allowing it to cover the buttocks, lower torso, and scalp (Fig. 8). A case is presented in which the latissimus dorsi myocutaneous flap was transferred in stages to cover a large radiation ulcer of the right buttock.

Aged↗
PubMed2002

Differing flow patterns between ischemically challenged flap skin and flap skeletal muscle: implications for salvage regimens.

In this study, the authors tested the hypothesis that there is a significant difference in spatial patterns of reflow in skin as opposed to skeletal muscle after an ischemic insult. The authors believe that this pathophysiologic difference between the two flap types has significant implications for flap salvage strategies. Bilateral buttock skin flaps (10 x 18 cm) and latissimus dorsi myocutaneous flaps (10 x 20 cm) were elevated in Landrace pigs (n = 7). Flaps on one side of the animal were randomly assigned to 6 hours of arterial occlusion, with the contralateral side acting as control. At 15 minutes, 1 hour, and 4 hours after reflow, radioactive microspheres (15 microm) were injected into the left ventricle. After 18 hours of reperfusion, skin and muscle viability were estimated by intravenous fluorescein and soaking in nitroblue tetrazolium, respectively. Flow rates in the skin with an ischemia-reperfusion injury were significantly reduced (30 to 53 percent), at all time intervals, compared with controls. The flow rate in the fluorescent skin with ischemia-reperfusion injury of the latissimus dorsi flaps (0.037 ml/min/g at 15 min) was greater than in that of the buttock flaps (0.018 ml/min/g). The muscle flaps with ischemia-reperfusion injury had significantly higher flow rates than control muscle flaps at all time intervals studied (at 1 hour, 0.32 ml/min/g compared with 0.16 ml/min/g, respectively). In flap skeletal muscle, an early hyperemic phase during reperfusion maintains a significant blood flow to all regions, including the area of the flap that is destined for necrosis. In flap skin, however, there is a marked decrease in flow rates. These differences have important implications for the intravascular delivery of therapeutic agents to the damaged portions of the flap. Transdermal drug delivery systems should be explored as an alternative to intravascular regimens for the salvage of flap skin with ischemia-reperfusion injury.

Animals↗