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1.
Endocrine ; 2024 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-38874828

RESUMEN

PURPOSE: Thyroid lobectomy (TL) is an appropriate treatment for up to 4 cm intrathyroidal differentiated thyroid cancer (DTC). There is scarce data regarding TL outside first-world centers. Our aim is to report a cohort of patients with DTC treated with TL in Chile. METHODS: We included DTC patients treated with TL, followed for at least 6 months, characterized their clinicopathological features and classified their risk of recurrence and response to treatment. RESULTS: Eighty-two patients followed for a median of 2.3 years (0.5-7.0). Seventy-three (89%) patients had papillary, 8 (9.8%) follicular and 1 (1.2%) high-grade DTC. The risk of recurrence was low in 56 (68.3%) and intermediate in 26 (31.7%). Eight (9.8%) patients required early completion thyroidectomy and radioiodine. At last follow-up, 52 (70.3%) had excellent, 19 (25.7%) had indeterminate, and 1 (1.4%) had structural incomplete response. CONCLUSION: In a developing country, TL is an adequate option for appropriately selected DTC patients.

2.
Arch Endocrinol Metab ; 68: e230146, 2024 May 06.
Artículo en Inglés | MEDLINE | ID: mdl-38709151

RESUMEN

Objective: After initial treatment, up to 30% of patients with papillary thyroid cancer (PTC) have incomplete response, mainly cervical lymph node (LN) disease. Previous studies have suggested that active surveillance (AS) is a possible option for these patients. Our aim was to report the results of AS in patients with PTC and cervical LN disease. Materials and methods: In this retrospective observational study, we included adult patients treated and followed for PTC, who presented with cervical LN disease and were managed with AS. Growth was defined as an increase ≥ 3mm in either diameter. Results: We included 32 patients: 27 (84.4%) women, age of 39 ± 14 years, all initially treated with total thyroidectomy, and 22 (69%) with therapeutic neck dissection. Cervical LN disease was diagnosed 1 year (0.3-12.6) after initial management, with a diameter of 9.0 mm (6.0-19.0). After a median AS of 4.3 years (0.6-14.1), 4 (12.5%) patients had LNgrowth: 2 (50%) of whom were surgically removed, 1 (25%) was effectively treated with radiotherapy, and 1 (25%) had a scheduled surgery. Tg increase was the only predictive factor of LN growth evaluated as both the delta Tg (p < 0.0366) and percentage of Tg change (p < 0.0140). None of the included patients died, had local complications due to LN growth or salvage therapy, or developed distant metastases during follow-up. Conclusion: In selected patients with PTC and suspicious cervical LNs diagnosed after initial treatment, AS is a feasible and safe strategy as it allows effective identification and treatment of the minority of patients who progress.


Asunto(s)
Ganglios Linfáticos , Metástasis Linfática , Cáncer Papilar Tiroideo , Neoplasias de la Tiroides , Tiroidectomía , Espera Vigilante , Humanos , Femenino , Masculino , Adulto , Estudios Retrospectivos , Tiroidectomía/métodos , Neoplasias de la Tiroides/cirugía , Neoplasias de la Tiroides/patología , Persona de Mediana Edad , Cáncer Papilar Tiroideo/cirugía , Cáncer Papilar Tiroideo/patología , Ganglios Linfáticos/patología , Estudios de Factibilidad , Cuello/cirugía , Carcinoma Papilar/cirugía , Carcinoma Papilar/patología , Disección del Cuello/métodos , Adulto Joven
3.
JCO Glob Oncol ; 10: e2300343, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38603656

RESUMEN

Head and neck squamous cell carcinoma (HNSCC) is well known as a serious health problem worldwide, especially in low-income countries or those with limited resources, such as most countries in Latin America. International guidelines cannot always be applied to a population from a large region with specific conditions. This study established a Latin American guideline for care of patients with head and neck cancer and presented evidence of HNSCC management considering availability and oncologic benefit. A panel composed of 41 head and neck cancer experts systematically worked according to a modified Delphi process on (1) document compilation of evidence-based answers to different questions contextualized by resource availability and oncologic benefit regarding Latin America (region of limited resources and/or without access to all necessary health care system infrastructure), (2) revision of the answers and the classification of levels of evidence and degrees of recommendations of all recommendations, (3) validation of the consensus through two rounds of online surveys, and (4) manuscript composition. The consensus consists of 12 sections: Head and neck cancer staging, Histopathologic evaluation of head and neck cancer, Head and neck surgery-oral cavity, Clinical oncology-oral cavity, Head and neck surgery-oropharynx, Clinical oncology-oropharynx, Head and neck surgery-larynx, Head and neck surgery-larynx/hypopharynx, Clinical oncology-larynx/hypopharynx, Clinical oncology-recurrent and metastatic head and neck cancer, Head and neck surgery-reconstruction and rehabilitation, and Radiation therapy. The present consensus established 48 recommendations on HNSCC patient care considering the availability of resources and focusing on oncologic benefit. These recommendations could also be used to formulate strategies in other regions like Latin America countries.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias de Cabeza y Cuello , Humanos , Carcinoma de Células Escamosas de Cabeza y Cuello/terapia , América Latina/epidemiología , Consenso , Carcinoma de Células Escamosas/tratamiento farmacológico , Carcinoma de Células Escamosas/patología , Neoplasias de Cabeza y Cuello/terapia
4.
Clin Cancer Res ; 30(11): 2486-2496, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38526414

RESUMEN

PURPOSE: We investigated reflectance confocal microscopy (RCM) as a possible noninvasive approach for the diagnosis of cancer and real-time assessment of surgical margins. EXPERIMENTAL DESIGN: In a phase I study on 20 patients, we established the RCM imaging morphologic features that distinguish oral squamous cell carcinoma (OSCC) from normal tissue with a newly developed intraoral RCM probe. Our subsequent phase II prospective double-blinded study in 60 patients tested the diagnostic accuracy of RCM against histopathology. Five RCM videos from the tumor and five from normal surrounding mucosa were collected on each patient, followed by a 3-mm punch biopsy of the imaged area. An experienced RCM reader, who was blinded to biopsy location and histologic diagnosis, examined the videos from both regions and classified each as "tumor" or "not tumor" based on RCM features established in phase I. Hematoxylin and eosin slides from the biopsies were read by a pathologist who was blinded to RCM results. Using histology as the gold standard, we calculated the sensitivity and specificity of RCM. RESULTS: We report a high agreement between the blinded readers (95% for normal tissue and 81.7% for tumors), high specificity (98.3%) and negative predictive values (96.6%) for normal tissue identification, and high sensitivity (90%) and positive predictive values (88.2%) for tumor detection. CONCLUSIONS: RCM imaging is a promising technology for noninvasive in vivo diagnosis of OSCC and for real-time intraoperative evaluation of mucosal surgical margins. Its inherent constraint, however, stems from the diminished capability to evaluate structures located at more substantial depths within the tissue.


Asunto(s)
Microscopía Confocal , Neoplasias de la Boca , Humanos , Neoplasias de la Boca/patología , Neoplasias de la Boca/diagnóstico por imagen , Neoplasias de la Boca/diagnóstico , Neoplasias de la Boca/cirugía , Microscopía Confocal/métodos , Femenino , Masculino , Estudios Prospectivos , Persona de Mediana Edad , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/diagnóstico por imagen , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/cirugía , Anciano , Adulto , Método Doble Ciego , Biopsia , Mucosa Bucal/patología , Mucosa Bucal/diagnóstico por imagen , Sensibilidad y Especificidad
5.
Biofactors ; 2024 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-38284625

RESUMEN

Progressive familial intrahepatic cholestasis type 3 (PFIC3) is a severe rare liver disease that affects between 1/50,000 and 1/100,000 children. In physiological conditions, bile is produced by the liver and stored in the gallbladder, and then it flows to the small intestine to play its role in fat digestion. To prevent tissue damage, bile acids (BAs) are kept in phospholipid micelles. Mutations in phosphatidyl choline transporter ABCB4 (MDR3) lead to intrahepatic accumulation of free BAs that result in liver damage. PFIC3 onset usually occurs at early ages, progresses rapidly, and the prognosis is poor. Currently, besides the palliative use of ursodeoxycholate, the only available treatment for this disease is liver transplantation, which is really challenging for short-aged patients. To gain insight into the pathogenesis of PFIC3 we have performed an integrated proteomics and phosphoproteomics study in human liver samples to then validate the emerging functional hypotheses in a PFIC3 murine model. We identified 6246 protein groups, 324 proteins among them showing differential expression between control and PFIC3. The phosphoproteomic analysis allowed the identification of 5090 phosphopeptides, from which 215 corresponding to 157 protein groups, were differentially phosphorylated in PFIC3, including MDR3. Regulation of essential cellular processes and structures, such as inflammation, metabolic reprogramming, cytoskeleton and extracellular matrix remodeling, and cell proliferation, were identified as the main drivers of the disease. Our results provide a strong molecular background that significantly contributes to a better understanding of PFIC3 and provides new concepts that might prove useful in the clinical management of patients.

6.
Metab Eng Commun ; 18: e00229, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38098801

RESUMEN

Saccharomyces cerevisiae has been conveniently used to produce Taxol® anticancer drug early precursors. However, the harmful impact of oxidative stress by the first cytochrome P450-reductase enzymes (CYP725A4-POR) of Taxol® pathway has hampered sufficient progress in yeast. Here, we evolved an oxidative stress-resistant yeast strain with three-fold higher titre of their substrate, taxadiene. The performance of the evolved and parent strains were then evaluated in galactose-limited chemostats before and under the oxidative stress by an oxidising agent. The interaction of evolution and oxidative stress was comprehensively evaluated through transcriptomics and metabolite profiles integration in yeast enzyme-constrained genome scale model. Overall, the evolved strain showed improved respiration, reduced overflow metabolites production and oxidative stress re-induction tolerance. The cross-protection mechanism also potentially contributed to better heme, flavin and NADPH availability, essential for CYP725A4 and POR optimal activity in yeast. The results imply that the evolved strain is a robust cell factory for future efforts towards Taxol© production.

7.
Arch. endocrinol. metab. (Online) ; 68: e230146, 2024. tab, graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1556956

RESUMEN

ABSTRACT Objective: After initial treatment, up to 30% of patients with papillary thyroid cancer (PTC) have incomplete response, mainly cervical lymph node (LN) disease. Previous studies have suggested that active surveillance (AS) is a possible option for these patients. Our aim was to report the results of AS in patients with PTC and cervical LN disease. Materials and methods: In this retrospective observational study, we included adult patients treated and followed for PTC, who presented with cervical LN disease and were managed with AS. Growth was defined as an increase ≥ 3mm in either diameter. Results: We included 32 patients: 27 (84.4%) women, age of 39 ± 14 years, all initially treated with total thyroidectomy, and 22 (69%) with therapeutic neck dissection. Cervical LN disease was diagnosed 1 year (0.3-12.6) after initial management, with a diameter of 9.0 mm (6.0-19.0). After a median AS of 4.3 years (0.6-14.1), 4 (12.5%) patients had LN growth: 2 (50%) of whom were surgically removed, 1 (25%) was effectively treated with radiotherapy, and 1 (25%) had a scheduled surgery. Tg increase was the only predictive factor of LN growth evaluated as both the delta Tg (p < 0.0366) and percentage of Tg change (p < 0.0140). None of the included patients died, had local complications due to LN growth or salvage therapy, or developed distant metastases during follow-up. Conclusions: In selected patients with PTC and suspicious cervical LNs diagnosed after initial treatment, AS is a feasible and safe strategy as it allows effective identification and treatment of the minority of patients who progress.

8.
Braz. j. anesth ; 74(1): 744348, 2024. graf
Artículo en Inglés | LILACS-Express | LILACS | ID: biblio-1557225

RESUMEN

Abstract Ultrasound evaluation of diaphragm function allows the detection of diaphragm dysfunction and the adaptation of ventilatory support in patients admitted to intensive care units. The studied patient had a C3 spinal cord injury. Ultrasound evaluation of diaphragm mobility showed that the patient suffered diaphragm dysfunction. A tracheotomy was indicated, and early ventilatory support was initiated. Ultrasound evaluation of diaphragm function in patients with cervical spinal cord injury is a useful and simple technique. It provides fast and reliable data for the diagnosis of respiratory insufficiency of neuromuscular origin.

9.
J Pers Med ; 13(10)2023 Oct 08.
Artículo en Inglés | MEDLINE | ID: mdl-37888086

RESUMEN

BACKGROUND: Sepsis is a critical and potentially fatal condition affecting millions worldwide, necessitating early intervention for improved patient outcomes. In recent years, clinical simulation has emerged as a valuable tool for healthcare professionals to learn sepsis management skills and enhance them. METHODS: This review aims to explore the use of clinical simulation in sepsis education and training, as well as its impact on how healthcare professionals acquire knowledge and skills. We conducted a thorough literature review to identify relevant studies, analyzing them to assess the effectiveness of simulation-based training, types of simulation methods employed, and their influence on patient outcomes. RESULTS: Simulation-based training has proven effective in enhancing sepsis knowledge, skills, and confidence. Simulation modalities vary from low-fidelity exercises to high-fidelity patient simulations, conducted in diverse settings, including simulation centers, hospitals, and field environments. Importantly, simulation-based training has shown to improve patient outcomes, reducing mortality rates and hospital stays. CONCLUSION: In summary, clinical simulation is a powerful tool used for improving sepsis education and training, significantly impacting patient outcomes. This article emphasizes the importance of ongoing research in this field to further enhance patient care. The shift toward simulation-based training in healthcare provides a safe, controlled environment for professionals to acquire critical skills, fostering confidence and proficiency when caring for real sepsis patients.

10.
Endocr Relat Cancer ; 30(11)2023 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-37671897

RESUMEN

Molecular testing contributes to improving the diagnosis of indeterminate thyroid nodules (ITNs). ThyroidPrint® is a ten-gene classifier aimed to rule out malignancy in ITN. Post-validation studies are necessary to determine the real-world clinical benefit of ThyroidPrint® in patients with ITN. A single-center, prospective, noninterventional clinical utility study was performed, analyzing the impact of ThyroidPrint® in the physicians' clinical decisions for ITN. Demographics, nodule characteristics, benign call rates (BCRs), and surgical outcomes were measured. Histopathological data were collected from surgical biopsies of resected nodules. Of 1272 fine-needle aspirations, 109 (8.6%) were Bethesda III and 135 (10.6%) were Bethesda IV. Molecular testing was performed in 155 of 244 ITN (63.5%), of which 104 were classified as benign (BCR of 67.1%). After a median follow-up of 15 months, 103 of 104 (99.0%) patients with a benign ThyroidPrint® remained under surveillance and one patient underwent surgery which was a follicular adenoma. Surgery was performed in all 51 patients with a suspicious for malignancy as per ThyroidPrint® result and in 56 patients who did not undergo testing, with a rate of malignancy of 70.6% and 32.1%, respectively. A higher BCR was observed in follicular lesion of undetermined significance (87%) compared to atypia of undetermined significance (58%) (P < 0.05). False-positive cases included four benign follicular nodules and six follicular and four oncocytic adenomas. Our results show that, physicians chose active surveillance instead of diagnostic surgery in all patients with a benign ThyroidPrint® result, reducing the need for diagnostic surgery in 67% of patients with preoperative diagnosis of ITN.


Asunto(s)
Neoplasias de la Tiroides , Nódulo Tiroideo , Humanos , Estudios Prospectivos , Perfilación de la Expresión Génica/métodos , Estudios Retrospectivos , Neoplasias de la Tiroides/diagnóstico , Neoplasias de la Tiroides/genética , Neoplasias de la Tiroides/cirugía , Nódulo Tiroideo/diagnóstico , Nódulo Tiroideo/genética , Nódulo Tiroideo/cirugía , Biopsia con Aguja Fina
11.
Rev Esp Patol ; 55(1): 41-45, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-34980440

RESUMEN

Coronavirus disease-2019 (COVID-19) is a global public health emergency with numerous clinical facets, including acute kidney injury and acute cerebrovascular disease. Further knowledge of its various pathogenic mechanisms is essential, including coagulation disorders. Monoclonal gammopathy is characterized by the overproduction of a monoclonal immunoglobulin caused by clonal proliferation. Using a postmortem study of ultrasound-guided percutaneous core biopsies, the aim of this report is to present our observations on the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection pathology associated with monoclonal gammopathy. The clinical presentation was acute renal failure. Pathological findings revealed kappa light chain cast nephropathy. SARS-CoV-2 immunohistochemistry was positive in some renal tubular cells. Another notable finding was the presence of a high density of alveolar megakaryocytes, which probably explained the final outcome (acute cerebrovascular disease). Immunohistochemical study for SARS-CoV-2 does not verify the pathogenic effect of the virus and thus its contribution to the acute kidney injury.


Asunto(s)
COVID-19 , Paraproteinemias , Autopsia , Humanos , SARS-CoV-2 , Ultrasonografía Intervencional
12.
Oral Oncol ; 124: 105641, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34864297

RESUMEN

OBJECTIVES: Distant metastasis (DM) is an important prognostic factor for oral squamous cell carcinoma (OSCC). The aim of this study is to evaluate the influence of host and tumor factors in development of DM. MATERIALS AND METHODS: After IRB approval, 1369 patients with OSCC undergoing primary surgery were eligible for the study. The primary endpoint was the development of distant metastasis (DM). Patients were pathologically staged according to the American Joint Committee on Cancer, 8th Edition. Pre-operative peripheral blood counts were used to calculate neutrophil-to-lymphocyte ratio (NLR). RESULTS: Median follow-up was 39 months (range 1-221). DM were identified in 126 patients during follow-up. When analyzed as a time-dependent covariate, neck recurrence (NR) was a significant predictor of DM (HR 16.35, 95% CI: 11.39-23.47, p < 0.001). NLR, margin status, vascular invasion, perineural invasion (PNI), grade, pT, number of metastatic lymph nodes, level IV involvement, and extra nodal-extension (ENE) were also significant. In multivariable analysis, NLR, margins, PNI, number of metastatic lymph nodes, and ENE maintained independent predictive capacity. Patients with NLR ≥ 5.7 were 3 times more likely to develop DM compared to NLR ≤ 2.9 (95% CI: 1.74-5.59, p < 0.001), patients with ≥ 5 metastatic lymph nodes were 2 times more likely to develop DM (95% CI: 1.18-3.60, p = 0.011), and those with ENE were 4 times more likely (95% CI: 2.67-8.20, p < 0.001) when compared to pNx/pN0 patients. CONCLUSIONS: NLR, number of metastatic lymph nodes, and ENE were the strongest independent predictors of DM in OSCC treated with primary surgery and appropriate adjuvant therapy.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias de Cabeza y Cuello , Neoplasias de la Boca , Carcinoma de Células Escamosas/patología , Neoplasias de Cabeza y Cuello/patología , Humanos , Linfocitos/patología , Neoplasias de la Boca/patología , Estadificación de Neoplasias , Neutrófilos/patología , Pronóstico , Estudios Retrospectivos , Carcinoma de Células Escamosas de Cabeza y Cuello/patología
13.
J Cancer Educ ; 37(1): 196-202, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-32500453

RESUMEN

Non-melanoma skin cancer (NMSC), despite its low mortality, can impose a significant psychological burden on patients. The aim of the present study is to examine the evolution of the quality of life (QOL) in patients with cervicofacial NMSC during treatment. This prospective cohort study was conducted to a group of patients with cervicofacial NMSC, confirmed by skin biopsy. These patients completed the Skin Cancer Index questionnaire at the time of diagnosis and at 1 week, 1 month and 6 months after treatment began. Data for these patients' demographic characteristics and variables related to the type of tumour, the treatment received and the evolution of the condition were recorded. The study group was composed of 220 patients. At the time of diagnosis, the overall mean score for QOL was 54.1 (SD 21.9); for the social appearance component, it was 76.7 (SD 26.2), and for the emotional component, it was 23 (SD 25.1). Six months after treatment began, the overall mean score was 61 (SD19.1), that for social appearance, 85 (SD 20.6), and that for the emotional component, 27.4 (SD 26.6). All the differences were statistically significant (p < 0.05). The results obtained show that during the treatment period, it is at the time of diagnosis when patients with cervicofacial NMSC undergo the greatest deterioration in their QOL. In comparison with the findings obtained in previous studies, our population obtained lower overall scores in the questionnaires and less improvement during follow-up.


Asunto(s)
Carcinoma Basocelular , Calidad de Vida , Neoplasias Cutáneas , Carcinoma Basocelular/psicología , Carcinoma Basocelular/terapia , Humanos , Estudios Prospectivos , Calidad de Vida/psicología , Neoplasias Cutáneas/psicología , Neoplasias Cutáneas/terapia , Interacción Social
14.
Braz J Anesthesiol ; 2021 Dec 25.
Artículo en Inglés | MEDLINE | ID: mdl-34963619

RESUMEN

Ultrasound evaluation of diaphragm function allows the detection of diaphragm dysfunction and the adaptation of ventilatory support in patients admitted to intensive care units. The studied patient had a C3 spinal cord injury. Ultrasound evaluation of diaphragm mobility showed that the patient suffered diaphragm dysfunction. A tracheotomy was indicated, and early ventilatory support was initiated. Ultrasound evaluation of diaphragm function in patients with cervical spinal cord injury is a useful and simple technique. It provides fast and reliable data for the diagnosis of respiratory insufficiency of neuromuscular origin.

15.
Arch Endocrinol Metab ; 64(5): 542-547, 2021 May 18.
Artículo en Inglés | MEDLINE | ID: mdl-34033294

RESUMEN

OBJECTIVE: Warthin-like papillary thyroid cancer (WL-PTC) is an uncommon variant of PTC, usually associated with lymphocytic thyroiditis. Scarce evidence suggests that WL-PTC has similar clinical presentation to classic PTC (C-PTC), with no studies comparing risks of recurrence and response to treatment between both variants. Our objective was to describe the clinical presentation and prognosis of WL-PTC and compare it to C-PTC. METHODS: Retrospective analysis of a prospective cohort, including 370 (96%) patients with C-PTC and 17 (4%) with WL-PTC, consecutively treated with total thyroidectomy with or without RAI, followed for at least 6 months. We compared clinical presentation, risk of mortality and recurrence, as well as response to treatment between both variants. RESULTS: Of the total cohort: 317 (82%) female, 38 ± 13.5 years, median follow-up 4 years (0.5-28.5); most of them stage I and low/intermediate risk of recurrence. We found no differences regarding clinical-pathological data and risk of recurrence. WL-PTC was associated with a higher rate of anti-thyroglobulin antibodies (TgAb) (65% vs. 36%, p = 0.016) and lymphocytic thyroiditis (59% vs. 34%, p = 0.03). The rates of biochemical and structural incomplete responses were similar in both variants. WL-PTC had a lower rate of excellent response (23% vs. 54%, p = 0.01), which became non-significant when performing analysis by TgAb presence (50% vs. 67%, p = NS). CONCLUSION: WL-CPT and C-CPT have similar clinical presentation and rate of recurrence. The lower rate of excellent response to treatment in WL-PTC is due to a higher frequency of TgAb. WL-PCT should not be considered an aggressive variant of PTC.


Asunto(s)
Carcinoma Papilar , Neoplasias de la Tiroides , Femenino , Humanos , Recurrencia Local de Neoplasia , Pronóstico , Estudios Prospectivos , Estudios Retrospectivos , Tiroglobulina , Cáncer Papilar Tiroideo , Neoplasias de la Tiroides/cirugía , Tiroidectomía
16.
JAMA Netw Open ; 4(3): e211936, 2021 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-33734415

RESUMEN

Importance: Sentinel lymph node (SLN) mapping agents approved for current surgical practice lack sufficient brightness and target specificity for high-contrast, sensitive nodal visualization. Objective: To evaluate whether an ultrasmall, molecularly targeted core-shell silica nanoparticle (Cornell prime dots) can safely and reliably identify optically avid SLNs in head and neck melanoma during fluorescence-guided biopsy. Design, Setting, and Participants: This nonrandomized clinical trial enrolled patients aged 18 years or older with histologically confirmed melanoma in whom SLN mapping was indicated. Exclusion criteria included known pregnancy, breast-feeding, or medical illness unrelated to the tumor. The trial was conducted between February 2015 and March 2018 at Memorial Sloan Kettering Cancer Center, with postoperative follow-up of 2 years. Data analysis was conducted from February 2015 to March 2018. Interventions: Patients received standard-of-care technetium Tc 99m sulfur colloid followed by a microdose administration of integrin-targeting, dye-encapsulated nanoparticles, surface modified with polyethylene glycol chains and cyclic arginine-glycine-aspartic acid-tyrosine peptides (cRGDY-PEG-Cy5.5-nanoparticles) intradermally. Main Outcomes and Measures: The primary end points were safety, procedural feasibility, lowest particle dose and volume for maximizing nodal fluorescence signal, and proportion of nodes identified by technetium Tc 99m sulfur colloid that were optically visualized by cRGDY-PEG-Cy5.5-nanoparticles. Secondary end points included proportion of patients in whom the surgical approach or extent of dissection was altered because of nodal visualization. Results: Of 24 consecutive patients enrolled (median [interquartile range] age, 64 [51-71] years), 18 (75%) were men. In 24 surgical procedures, 40 SLNs were excised. Preoperative localization of SLNs with technetium Tc 99m sulfur colloid was followed by particle dose-escalation studies, yielding optimized doses and volumes of 2 nmol and 0.4 mL, respectively, and maximum SLN signal-to-background ratios of 40. No adverse events were observed. The concordance rate of evaluable SLNs by technetium Tc 99m sulfur colloid and cRGDY-PEG-Cy5.5-nanoparticles was 90% (95% CI, 74%-98%), 5 of which were metastatic. Ultrabright nanoparticle fluorescence enabled high-sensitivity SLN visualization (including difficult-to-access anatomic sites), deep tissue imaging, and, in some instances, detection through intact skin, thereby facilitating intraoperative identification without extensive dissection of adjacent normal tissue or nerves. Conclusions and Relevance: This study found that nanoparticle-based fluorescence-guided SLN biopsy in head and neck melanoma was feasible and safe. This technology holds promise for improving lymphatic mapping and SLN biopsy procedures, while potentially mitigating procedural risks. This study serves as a first step toward developing new multimodal approaches for perioperative care. Trial Registration: ClinicalTrials.gov Identifier: NCT02106598.


Asunto(s)
Neoplasias de Cabeza y Cuello/diagnóstico , Biopsia Guiada por Imagen/métodos , Melanoma/diagnóstico , Nanopartículas , Biopsia del Ganglio Linfático Centinela/métodos , Ganglio Linfático Centinela/patología , Dióxido de Silicio/farmacología , Anciano , Femenino , Humanos , Metástasis Linfática , Masculino , Melanoma/secundario , Persona de Mediana Edad , Cintigrafía , Estudios Retrospectivos
17.
Support Care Cancer ; 29(9): 5187-5195, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33629186

RESUMEN

PURPOSE: Non-melanoma skin cancer (NMSC) is the most frequent neoplasm today, worldwide. This type of tumour presents low mortality but causes a major psychosocial impact on the patient. Studies have shown that the patient's quality of life (as detected by questionnaire scores in this respect) improves as the care process advances. The main aim of the present study is to identify the factors that are related to this favourable evolution. METHODS: This descriptive cross-sectional study included patients with cervicofacial NMSC, confirmed by skin biopsy. The patients were asked to complete the Skin Cancer Index questionnaire at the time of diagnosis and subsequently at 1 week, 1 month and 6 months after treatment. Relevant demographic variables were recorded, together with information on health status and the treatment received. RESULTS: A total of 229 patients with biopsy-confirmed cervicofacial NMSC were included in the study population, and 220 completed the quality of life questionnaires at the necessary time points during the care process. Some variables-sex, education, marital status, history of anxiety or depression, tumour type, the treatment received and the VAS score in this respect-were found to have a statistically significant influence on the degree of improvement recorded in the quality of life questionnaire scores during follow-up. CONCLUSIONS: The quality of life questionnaire scores of patients with cervicofacial NMSC improve following treatment, but this progression is not homogeneous among patients. We identify the variables that are related to a greater degree of improvement on the questionnaire scales (overall, emotional and social-aesthetic).


Asunto(s)
Neoplasias Cutáneas , Ansiedad , Carcinoma Basocelular , Estudios Transversales , Humanos , Calidad de Vida , Neoplasias Cutáneas/terapia , Encuestas y Cuestionarios
18.
Acta Dermatovenerol Croat ; 29(4): 184-190, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36896688

RESUMEN

Non-melanoma skin cancer (NMSC) is the most common neoplasm. The characteristics of this disease (location in aesthetically sensitive areas, the appearance of successive tumors during follow-up, and high rates of survival) are such that the concept of health-related quality of life (HRQoL) is of particular importance. The aim of the present study was to describe and analyses patient quality of life following diagnosis with cervicofacial NMSC. A descriptive cross-sectional study was conducted on patients with cervicofacial NMSC, confirmed by skin biopsy. In each case, when the definitive diagnosis of NMSC was established, the patient completed the Skin Cancer Index questionnaire and demographic data, health status, and sun exposure habits were recorded. The study population was composed of 220 patients with histologically confirmed cervicofacial NMSC. The mean score obtained for the Skin Cancer Index questionnaire was 54.1 (SD 21.9), in which the social-aesthetic component had a mean score of 76.7 (SD 26.2), while the emotional component had a mean score of 23 (SD 25.1). Male patients, those with secondary or higher education, and those who had no history of anxiety or depression had significantly higher mean scores for HRQoL. This study demonstrated that the diagnosis of cervicofacial NMSC significantly impacts HRQoL and that certain population groups (women, persons with only primary or no education qualifications, and those a history of anxiety or depression) are more susceptible. The questionnaire scores obtained were lower than those reported in previous studies on this topic and reflect a particularly strong impact on emotional aspects of patient quality of life.


Asunto(s)
Calidad de Vida , Neoplasias Cutáneas , Humanos , Masculino , Femenino , Calidad de Vida/psicología , Estudios Transversales , Neoplasias Cutáneas/patología , Ansiedad/etiología
19.
Arch. endocrinol. metab. (Online) ; 64(5): 542-547, Sept.-Oct. 2020. tab
Artículo en Inglés | LILACS | ID: biblio-1131140

RESUMEN

ABSTRACT Objective Warthin-like papillary thyroid cancer (WL-PTC) is an uncommon variant of PTC, usually associated with lymphocytic thyroiditis. Scarce evidence suggests that WL-PTC has similar clinical presentation to classic PTC (C-PTC), with no studies comparing risks of recurrence and response to treatment between both variants. Our objective was to describe the clinical presentation and prognosis of WL-PTC and compare it to C-PTC. Subjects and methods Retrospective analysis of a prospective cohort, including 370 (96%) patients with C-PTC and 17 (4%) with WL-PTC, consecutively treated with total thyroidectomy with or without RAI, followed for at least 6 months. We compared clinical presentation, risk of mortality and recurrence, as well as response to treatment between both variants. Results Of the total cohort: 317 (82%) female, 38 ± 13.5 years, median follow-up 4 years (0.5-28.5); most of them stage I and low/intermediate risk of recurrence. We found no differences regarding clinical-pathological data and risk of recurrence. WL-PTC was associated with a higher rate of anti-thyroglobulin antibodies (TgAb) (65% vs. 36%, p = 0.016) and lymphocytic thyroiditis (59% vs. 34%, p = 0.03). The rates of biochemical and structural incomplete responses were similar in both variants. WL-PTC had a lower rate of excellent response (23% vs. 54%, p = 0.01), which became non-significant when performing analysis by TgAb presence (50% vs. 67%, p = NS). Conclusions WL-CPT and C-CPT have similar clinical presentation and rate of recurrence. The lower rate of excellent response to treatment in WL-PTC is due to a higher frequency of TgAb. WL-PCT should not be considered an aggressive variant of PTC.


Asunto(s)
Humanos , Femenino , Neoplasias de la Tiroides/cirugía , Carcinoma Papilar , Pronóstico , Tiroglobulina , Tiroidectomía , Estudios Prospectivos , Estudios Retrospectivos , Cáncer Papilar Tiroideo , Recurrencia Local de Neoplasia
20.
Acta Dermatovenerol Croat ; 28(2): 75-79, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32876032

RESUMEN

The principal cause of skin cancer is sun exposure. In areas with high sun exposure levels, early diagnosis and sun protection education strategies must be developed. Aim of the study was to evaluate the impact of an early skin cancer diagnosis intervention implementing teledermatology. Transversal descriptive study on a population in the Western Costa del Sol. Primary care physicians were instructed on skin cancer diagnosis. They recruited consecutive at-risk patients and held four workshops for early skin cancer diagnosis and education on sun protection. The resulting variables on participants' satisfaction and intention to change were collected. 393 patients were recruited. The mean age was 52.9 years, and 65.4% were women. Suspicious lesions were detected in 24.1% of participants, and 11.7% were attended to via teledermatology. Of these, 65.2% were evaluated in person at the Dermatology Department. Fourteen basal cell carcinomas, 5 squamous cell carcinomas, and 2 melanomas were diagnosed. Regarding patient satisfaction, 67.7% found all aspects of the workshops of interest, 41.7% found the skin check-up of interest, and 26.4% found sun and skin cancer prevention information of interest. Of the patients attended to via teledermatology, 100% stated it was good or very good and 100% would consult again via this method. The intervention was successful in terms of participation, skin cancer diagnosis, and satisfaction, especially compared with other international campaigns. Therefore, although the data cannot be extrapolated to all environments, this initiative may be used as the basis for the development of future interventions.


Asunto(s)
Dermatología/métodos , Educación del Paciente como Asunto , Neoplasias Cutáneas/diagnóstico , Neoplasias Cutáneas/patología , Quemadura Solar/prevención & control , Telemedicina/métodos , Detección Precoz del Cáncer , Femenino , Humanos , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Atención Primaria de Salud
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