Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Resultados 1 - 9 de 9
Filtrar
1.
Facial Plast Surg Clin North Am ; 32(3): 369-381, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38936994

RESUMEN

The authors present the contemporary landscape for males seeking Asian blepharoplasty and Asian rhinoplasty, with special emphasis on the unique anatomical and aesthetic considerations for this patient population. The authors highlight the latest techniques used to achieve superlative results.


Asunto(s)
Pueblo Asiatico , Blefaroplastia , Rinoplastia , Humanos , Rinoplastia/métodos , Blefaroplastia/métodos , Masculino , Estética
2.
J Cutan Pathol ; 39(6): 603-9, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22575025

RESUMEN

BACKGROUND: CD147 is upregulated in multiple cancer types, but its expression in advanced cutaneous squamous cell carcinoma (SCC) is unknown. Our purpose was to evaluate the expression patterns of CD147 and related monocarboxylate transporters (MCT1, MCT4) to determine their correlation with survival. METHODS: This is a retrospective cohort study of patients with advanced stage cutaneous SCC of the head and neck who presented to a tertiary care center between 1998 and 2006 (n=50). CD147, MCT1 and MCT4 expression levels were assessed using immunofluorescence analysis of archived tumor samples and correlated with survival and clinicopathologic characteristics. RESULTS: The majority of patients (92%, n = 46) were diagnosed with stage III disease, with 46% (n = 23) having positive regional lymph node metastasis and 8% (n = 4) with distant metastasis. Primary malignancies had an overexpression of CD147 (78%; n = 35), MCT1 (23%; n = 10) and MCT4 (47%; n = 20). In addition, there was a significant relationship between the overexpression of CD147 and node positive disease (p = 0.048). Two- and five-year survival rates were 69 and 61%, respectively. There was a trend toward decreased survival in patients with overexpression of CD147 (p = 0.17), MCT1 (p = 0.11) and MCT4 (p = 0.15). CONCLUSION: CD147 may represent a biomarker or potential therapeutic target in advanced cutaneous SCC.


Asunto(s)
Basigina/biosíntesis , Biomarcadores de Tumor/biosíntesis , Carcinoma de Células Escamosas/metabolismo , Regulación Neoplásica de la Expresión Génica , Neoplasias de Cabeza y Cuello/metabolismo , Proteínas de Neoplasias/biosíntesis , Neoplasias Cutáneas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/terapia , Supervivencia sin Enfermedad , Femenino , Neoplasias de Cabeza y Cuello/mortalidad , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/terapia , Humanos , Masculino , Persona de Mediana Edad , Transportadores de Ácidos Monocarboxílicos/biosíntesis , Proteínas Musculares/biosíntesis , Metástasis de la Neoplasia , Estudios Retrospectivos , Neoplasias Cutáneas/mortalidad , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/terapia , Tasa de Supervivencia , Simportadores/biosíntesis , Regulación hacia Arriba
3.
Laryngoscope Investig Otolaryngol ; 3(6): 450-456, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30599029

RESUMEN

BACKGROUND: Tongue fibrosis resulting from head and neck cancer, surgery, radiation, chemotherapy, or a combination thereof devastates one's quality of life. Therapeutic options are limited. Here we investigate human bone marrow-derived multipotent stromal cells (MSC) as a novel injectable treatment for post-injury tongue fibrosis. METHODS: MSCs were grown in culture. Eighteen athymic rats underwent unilateral partial glossectomy. After two weeks for scar formation, a single injection was performed in the tongue scar. Three treatment groups were studied: low and high concentration MSC, and control media injection. Tongues were harvested for evaluation at three weeks post-treatment. RESULTS: Dense fibrosis was achieved in control animals at five weeks. High concentration MSC reduced cross sectional scar burden (P = .007) and pathologic score for inflammation and fibrosis. CONCLUSION: This study establishes the feasibility of a novel rodent tongue fibrosis model, and begins to assess the utility of human MSCs to reduce scar burden. LEVEL OF EVIDENCE: N/a.

4.
Allergy Rhinol (Providence) ; 8(2): 105-108, 2017 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-28583236

RESUMEN

BACKGROUND: Inverted papilloma (IP) is the most common benign sinonasal neoplasm. Endoscopic techniques, improved understanding of pathophysiology, and novel surgical approaches have allowed rhinologists to treat IPs more effectively, with surgery being the mainstay of therapy. Frontal sinus IP poses a challenge for surgical therapy due to complex anatomy and potentially difficult surgical access. OBJECTIVES: We reported a unique case of a massive frontal sinus IP that presented with intracranial and orbital extension, with near resolution after chemotherapy. METHODS: A retrospective case review of a patient with a frontal sinus IP treated at a tertiary academic medical center. RESULTS: A 75-year-old male patient presented with nasal obstruction, purulent nasal discharge, and a growing left supraorbital mass. Endoscopy demonstrated a mass that filled both frontal and ethmoid sinuses, with orbital invasion. There also was substantial erosion of the posterior table, which measured 1.73 × 1.40 cm. A biopsy specimen demonstrated IP with carcinoma in situ. The patient was deemed unresectable on initial evaluation and, subsequently, underwent chemotherapy (carboplatin and paclitaxel). The tumor had a dramatic response to chemotherapy, and the patient elected for definitive surgery to remove any residual disease. During surgery, only a small focus of IP was found along the superior wall of the frontal sinus. No tumor was found elsewhere, including at the site of skull base erosion. The final pathology was IP without carcinoma in situ or dysplasia. CONCLUSION: This was the first reported case of chemotherapeutic "debulking" of IP, which facilitated surgical resection, despite substantial intracranial and orbital involvement. Although nearly all IPs can be treated surgically, rare cases, such as unresectable tumors, may benefit from systemic chemotherapy.

5.
Head Neck ; 38(2): 247-52, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25270595

RESUMEN

BACKGROUND: Advanced cutaneous squamous cell carcinoma (SCC) is an uncommon and aggressive malignancy. As a result, there is limited understanding of its biology and pathogenesis. CD147 and epidermal growth factor receptor (EGFR) have been identified as oncologically important targets, but their relationship remains undefined in cutaneous SCC. METHODS: Multiple cutaneous SCC cell lines (Colo-16, SRB-1, and SRB-12), were treated in vitro with a range of chimeric anti-CD147 monoclonal antibody (mAb) (0, 50, 100, and 200 µg/mL) or transfected with a small interfering RNA against CD147 (SiCD147). Cell proliferation, migration (scratch wound healing assay), and protein expression was then assessed. In vivo, Colo-16 flank xenografts were treated anti-CD147 mAb (150 µg i.p. triweekly). RESULTS: After treatment with anti-CD147 (200 µg/mL), there was a significant decrease in proliferation for all cell lines relative to controls (p < .005). In addition, treatment with anti-CD147 (200 µg/mL) resulted in decreased cell migration for all cell lines, with an average of 43% reduction in closure compared to controls (p < .001). Colo-16 SiCD147 expression demonstrated similar reduction in proliferation and wound closure. Anti-CD147 antibody therapy and siRNA mediated reduction in CD147 expression were both found to decrease protein expression of EGFR, which correlated with a reduction in downstream total and phosphorylated protein kinase B (pAKT). Tumor growth in vivo was reduced for both the anti-CD147 treatment group and the SiCD147 group relative to controls. CONCLUSION: Inhibition and downregulation of CD147 in cutaneous SCC resulted in suppression of the malignant phenotype in vitro and in vivo, which may be mediated in part by an alteration in EGFR expression. As a result, CD147 may serve as a potential therapeutic target for advanced cutaneous SCC.


Asunto(s)
Anticuerpos Monoclonales/farmacología , Basigina/inmunología , Carcinoma de Células Escamosas/tratamiento farmacológico , Receptores ErbB/antagonistas & inhibidores , Neoplasias Cutáneas/tratamiento farmacológico , Animales , Carcinoma de Células Escamosas/patología , Línea Celular Tumoral , Movimiento Celular/efectos de los fármacos , Proliferación Celular/efectos de los fármacos , Regulación hacia Abajo , Humanos , Ratones Desnudos , ARN Interferente Pequeño/metabolismo , Neoplasias Cutáneas/patología , Ensayos Antitumor por Modelo de Xenoinjerto
6.
Am J Rhinol Allergy ; 30(6): 448-452, 2016 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-28124658

RESUMEN

BACKGROUND: Retromaxillary air cells (RMC) are posterior ethmoid cells that separate the maxillary and ethmoid sinuses. The clinical significance of these cells in contributing to revision functional endoscopic sinus surgery (FESS) is unknown. OBJECTIVES: To investigate the prevalence, anatomic dimensions, and radiographic characteristics of RMC in patients with recalcitrant chronic rhinosinusitis after previous FESS. METHODS: A retrospective review of patients who underwent revision FESS at a tertiary medical center between January 1, 2012, and December 31, 2014. Computed tomographies of patients who underwent revision FESS, including posterior ethmoidectomies, were reviewed. Each side of the scan was assessed for residual RMCs. The radiographic dimensions and Lund-Mackay (LM) scores of these cells were recorded. RESULTS: Sixty-nine patients who underwent revision FESS were identified. The median age of the patient population was 51 years (range, 21-79 years). Forty-two percent of the patients had nasal polyps. The mean number of previous FESS was 2 (range, 1-10). Incompletely dissected RMCs were identified in 101 of 138 analyzed sides (73%), despite documented previous posterior ethmoidectomies. Sixty-five percent of RMCs had an LM score of ≥1; RMCs of patients with polyps were more likely to have an LM score of 2 (p = 0.049). There was a significant correlation between the number of previous FESS procedures and whether the RMCs had been dissected (p = 0.010). There also was a significant correlation between RMC height and the number of previous FESS procedures (p = 0.015). CONCLUSION: RMCs seemed to often be undissected during primary FESS and, thus, were commonly encountered in revision FESS. The majority of analyzed cells in this cohort demonstrated an LM score of ≥1, which indicated that these cells frequently harbor residual diseased mucosa that may contribute to the need for revision surgery.


Asunto(s)
Endoscopía , Senos Paranasales/cirugía , Reoperación , Rinitis/cirugía , Sinusitis/cirugía , Adulto , Anciano , Enfermedad Crónica , Hueso Etmoides/patología , Hueso Etmoides/cirugía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Senos Paranasales/patología , Recurrencia , Estudios Retrospectivos , Factores de Riesgo , Tomografía Computarizada por Rayos X , Resultado del Tratamiento
7.
Clin Child Fam Psychol Rev ; 18(4): 328-45, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26487567

RESUMEN

When one parent kills the other, children are confronted with multiple losses, involving their attachment figures and their direct living environment. In these complex situations, potentially drastic decisions are made, for example, regarding new living arrangements and contact with the perpetrating parent. We aimed to synthesize the empirical literature on children's mental health and well-being after parental intimate partner homicide. A systematic search identified 17 relevant peer-reviewed articles (13 independent samples). We recorded the theoretical background, methodology, and sample characteristics of the studies, and extracted all child outcomes as well as potential risk and protective factors. Children's outcomes varied widely and included psychological, social, physical, and academic consequences (e.g., post-traumatic stress, attachment difficulties, weight and appetite changes, and drops in school grades). Potential risk and protective factors for children's outcomes included 10 categories of pre-, peri-, and post-homicide characteristics such as cultural background of the family, whether the child witnessed the homicide, and the level of conflict between the families of the victim and the perpetrator. We integrated the findings into a conceptual model of risk factors to direct clinical reflection and further research.


Asunto(s)
Aflicción , Homicidio , Violencia de Pareja , Padres , Trastornos por Estrés Postraumático , Niño , Preescolar , Humanos
8.
Laryngoscope ; 123(7): 1612-7, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23686870

RESUMEN

OBJECTIVES/HYPOTHESIS: Define surgical outcomes of specific donor sites for free tissue transfer in head and neck reconstruction. STUDY DESIGN: Retrospective cohort review at an academic tertiary care center. METHODS: A review was made of free tissue transfer procedures performed at a university-based tertiary care facility from October 2004 to April 2011. A total of 1,051 patients underwent six types of free flaps: fasciocutaneous radial forearm (53%), osteocutaneous radial forearm (16%), rectus abdominis (11%), fibula (10%), anterior lateral thigh (7%), and latissimus dorsi (2%). Demographic data were collected, and outcomes measured were: length of hospital stay, flap viability, and major complications (infection, fistula, and hematoma). RESULTS: Of the 1,051 flaps performed, the most common operative site was oral cavity (40%, n = 414) followed by hypopharynx/larynx (22%, n = 234), cutaneous (20%, n = 206), oropharynx (9%, n = 98), midface (7%, n = 76), and skull base (2%, n = 23). The median hospital stay was 7.9 days (range, 1-76), and the overall failure rate was 2.8%. Cutaneous defects required the shortest length of hospitalization (5.8 days, P < .0001), a low free flap failure rate (1.5%, n = 3), and limited major complications (6%, n = 12). Conversely, oropharynx defects were associated with the longest hospitalization (8.9 days). Midface defects had a high incidence of complications (15%, n = 11, P = .10). Defects above the angle of the mandible had higher overall complications when compared to below. Similarly, reconstruction for primary or recurrent cancer had a total failure rate of 2.5%, whereas secondary reconstruction and radionecrosis had a failure rate of 4.0% (P = .29). Additionally, there was no statistical difference between outcomes based on donor site. CONCLUSIONS: This review demonstrates that certain subsets of patients are at higher risk for complications after free tissue transfer. Patients undergoing free flap reconstruction for cutaneous defects have substantially shorter hospital stays and are at lower risk of flap complications, whereas reconstruction for radionecrosis and secondary reconstruction tend to have higher overall flap failure rates.


Asunto(s)
Neoplasias de Cabeza y Cuello/cirugía , Cabeza/cirugía , Cuello/cirugía , Procedimientos de Cirugía Plástica/métodos , Colgajos Quirúrgicos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Análisis de Varianza , Niño , Preescolar , Femenino , Supervivencia de Injerto , Humanos , Lactante , Tiempo de Internación/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/cirugía , Complicaciones Posoperatorias , Estudios Retrospectivos , Resultado del Tratamiento
9.
Otolaryngol Head Neck Surg ; 149(1): 67-70, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23585150

RESUMEN

OBJECTIVE: To assess the advantages of using mechanical anastomotic systems in head and neck free tissue transfer. STUDY DESIGN: Case series with chart review. SETTING: A university-based tertiary care center. SUBJECTS AND METHODS: A retrospective review of mechanical venous coupler devices in head and neck reconstruction performed between October 2004 and December 2006. A total of 261 venous anastomoses were performed in 234 consecutive patients. Five types of flaps were performed: radial forearm (66%), anterior lateral thigh (12%), fibula (9%), rectus abdominis (8%), and latissimus dorsi (2%). Demographic data were collected, and the outcomes measured were flap survival and microvascular complications. RESULTS: The size of the venous anastomosis ranged from 1.5 to 4.0 mm, with most being 3.0 mm (56%) followed by 3.5 mm (23%). The most common recipient vein used was a stump off the internal jugular vein (76%) followed by the external jugular vein (17%). Microvascular complications occurred in <5% (n = 11) of patients, with >50% of those being arterial insufficiency (n = 7). Total failures occurred in 3% (n = 7) of patients: 1.5% (n = 4) acute failures (<5 days) and 1.5% (n = 3) late failures. Of the acute failures, causes included venous congestion (n = 1) and arterial insufficiencies (n = 3). The venous coupler used in the failures was 3.0 mm in diameter. Free flap failures resulting from arterial insufficiency involved coupling to the external jugular vein, while the remaining free flap failures (n = 4) used the internal jugular vein. CONCLUSION: With an early venous failure rate of 0.38%, mechanical anastomosis is an adequate alternative to hand-sewn techniques.


Asunto(s)
Colgajos Tisulares Libres/irrigación sanguínea , Neoplasias de Cabeza y Cuello/cirugía , Microcirugia/instrumentación , Procedimientos de Cirugía Plástica/instrumentación , Técnicas de Sutura/instrumentación , Adulto , Anciano , Anciano de 80 o más Años , Anastomosis Quirúrgica/instrumentación , Femenino , Neoplasias de Cabeza y Cuello/patología , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento
SELECCIÓN DE REFERENCIAS
Detalles de la búsqueda