CLINICAL AND PATHOLOGICAL CHARACTERIZATION OF HEPATIC LYMPHOMAS: A RETROSPECTIVE SINGLE-CENTER STUDY.

BACKGROUND: The incidence of hepatic lymphoma has been increasing recently and diagnosis can be challenging as clinical presentation and radiological findings are usually variable and non-specific. OBJECTIVE: The aims of this study were to describe their main clinical, pathological and imaging characteristics and identify poor prognostic factors. METHODS: A retrospective study that included all patients with histological diagnosis of liver lymphoma over a 10-year period at our center was performed. RESULTS: A total of 36 patients were identified, with mean age of 56.6 years and male predominance (58%). There were three patients with primary liver lymphoma (8.3%) and 33 with secondary liver lymphoma (91.7%). The most common histological type was diffuse large B-cell lymphoma (33.3%). The most common clinical manifestations included fever, lymphadenopathy, weight loss, night sweats and abdominal discomfort; three patients (11.1%) were asymptomatic. Computed tomography scan revealed heterogenous radiological patterns including a single nodule (26.5%), multiple nodules (41.2%) or diffuse infiltration (32.4%). The mortality rate during follow-up was 55.6%. Higher levels of C-reactive protein (P=0.031) and absence of treatment response (P<0.001) were significantly associated with higher mortality. CONCLUSION: Hepatic lymphoma is a rare disease that may involve liver as part of a systemic disease or, less commonly, be confined to this organ. Clinical presentation and radiological findings are often variable and non-specific. It is associated with high mortality and poor prognostic factors include higher levels of C-reactive protein and absence of response to treatment.

Caracterização clínica e patológica dos linfomas hepáticos: um estudo retrospetivo unicêntrico / Clinical and pathological characterization of hepatic lymphomas: a retrospective single-center study

ABSTRACT Background: The incidence of hepatic lymphoma has been increasing recently and diagnosis can be challenging as clinical presentation and radiological findings are usually variable and non-specific. Objective The aims of this study were to describe their main clinical, pathological and imaging characteristics and identify poor prognostic factors. Methods A retrospective study that included all patients with histological diagnosis of liver lymphoma over a 10-year period at our center was performed. Results A total of 36 patients were identified, with mean age of 56.6 years and male predominance (58%). There were three patients with primary liver lymphoma (8.3%) and 33 with secondary liver lymphoma (91.7%). The most common histological type was diffuse large B-cell lymphoma (33.3%). The most common clinical manifestations included fever, lymphadenopathy, weight loss, night sweats and abdominal discomfort; three patients (11.1%) were asymptomatic. Computed tomography scan revealed heterogenous radiological patterns including a single nodule (26.5%), multiple nodules (41.2%) or diffuse infiltration (32.4%). The mortality rate during follow-up was 55.6%. Higher levels of C-reactive protein (P=0.031) and absence of treatment response (P<0.001) were significantly associated with higher mortality. Conclusion Hepatic lymphoma is a rare disease that may involve liver as part of a systemic disease or, less commonly, be confined to this organ. Clinical presentation and radiological findings are often variable and non-specific. It is associated with high mortality and poor prognostic factors include higher levels of C-reactive protein and absence of response to treatment.

RESUMO Contexto A incidência de linfoma hepático tem aumentando recentemente e o diagnóstico pode ser desafiante, na medida em que a apresentação clínica e os achados imagiológicos são geralmente variáveis e inespecíficos. Objetivo: Os objetivos deste estudo foram descrever suas principais características clínicas, patológicas e de imagem e identificar fatores de mau prognóstico. Métodos: Foi realizado um estudo retrospetivo que incluiu todos os pacientes com diagnóstico histológico de linfoma hepático num período de 10 anos no nosso centro. Resultados: Foram identificados 36 pacientes, com média de idade de 56,6 anos e predomínio de género masculino (58%). Havia três pacientes com linfoma hepático primário (8,3%) e 33 com linfoma hepático secundário (91,7%). O tipo histológico mais comum foi o linfoma difuso de grandes células B (33,3%). As manifestações clínicas mais comuns incluíram febre, linfadenopatia, emagrecimento, hipersudorese noturna e desconforto abdominal; 3 (11,1%) pacientes eram assintomáticos. A tomografia computadorizada revelou padrões radiológicos heterogêneos, incluindo um único nódulo (26,5%), múltiplos nódulos (41,2%) ou infiltração difusa (32,4%). A taxa de mortalidade durante o seguimento foi de 55,6%. Níveis mais elevados de proteína C reativa (P=0,031) e ausência de resposta ao tratamento (P<0,001) foram significativamente associados a maior mortalidade. Conclusão O linfoma hepático é uma doença rara que pode envolver o fígado como parte de uma doença sistêmica ou, menos comumente, estar confinado a este órgão. A apresentação clínica e os achados radiológicos são frequentemente variáveis e inespecíficos. Associa-se a elevada mortalidade e fatores de mau prognóstico incluem níveis mais elevados de proteína C reativa e ausência de resposta ao tratamento.

Thioredoxin reductase-1 levels are associated with NRF2 pathway activation and tumor recurrence in non-small cell lung cancer.

Activating mutations in the KEAP1/NRF2 pathway characterize a subset of non-small cell lung cancer (NSCLC) associated with chemoresistance and poor prognosis. We herein evaluated the relationship between 64 oxidative stress-related genes and overall survival data from 35 lung cancer datasets. Thioredoxin reductase-1 (TXNRD1) stood out as the most significant predictor of poor outcome. In a cohort of NSCLC patients, high TXNRD1 protein levels correlated with shorter disease-free survival and distal metastasis-free survival post-surgery, including a subset of individuals treated with platinum-based adjuvant chemotherapy. Bioinformatics analysis revealed that NSCLC tumors harboring genetic alterations in the NRF2 pathway (KEAP1, NFE2L2 and CUL3 mutations, and NFE2L2 amplification) overexpress TXNRD1, while no association with EGFR, KRAS, TP53 and PIK3CA mutations was found. In addition, nuclear accumulation of NRF2 overlapped with upregulated TXNRD1 protein in NSCLC tumors. Functional cell assays and gene dependency analysis revealed that NRF2, but not TXNRD1, has a pivotal role in KEAP1 mutant cells' survival. KEAP1 mutants overexpress TXNRD1 and are less susceptible to the cytotoxic effects of the TXNRD1 inhibitor auranofin when compared to wild-type cell lines. Inhibition of NRF2 with siRNA or ML-385, and glutathione depletion with buthionine-sulfoximine, sensitized KEAP1 mutant A549 cells to auranofin. NRF2 knockdown and GSH depletion also augmented cisplatin cytotoxicity in A549 cells, whereas auranofin had no effect. In summary, these findings suggest that TXNRD1 is not a key determinant of malignant phenotypes in KEAP1 mutant cells, although this protein can be a surrogate marker of NRF2 pathway activation, predicting tumor recurrence and possibly other aggressive phenotypes associated with NRF2 hyperactivation in NSCLC.

Venous revascularization to treat posterior nutcracker syndrome by transposition of the left gonadal vein: case report.

The Nutcracker Syndrome is manifest in the presence of a symptomatic entrapment of the left renal vein between the abdominal aorta and the superior mesenteric artery. In a more ephemeral variation of this disorder, called the Posterior Nutcracker Syndrome, the renal vein is not compressed anterior to the aorta, but posteriorly, between the artery and the spine. Although there are multiple treatment options, current techniques aim to relieve the symptoms and reduce venous pressure on the left renal vein. This report describes a case of Posterior Nutcracker Syndrome in which the management approach chosen was open surgery, transposing the gonadal vein distally, to the inferior cava vein.

Resuturing of Stomach in Endoscopic Sleeve Gastroplasty 8 Months After Original Procedure.

Endoluminal treatments such as endoscopic gastroplasty have been gaining ground in obesity treatment. A 52-year-old woman gained weight 5 months after endoscopic gastroplasty. Thus, it was decided to resuture the greater curvature of the stomach 8 months after the initial procedure by reducing the gastric pouch even further. The patient lost 16% of her total body weight with this procedure. Endoscopic gastroplasty, which can be reperformed in patients who regain weight, reach a plateau, or do not achieve the initial planned weight loss, is an effective and safe first-line obesity treatment.

Treatment response in primary biliary cholangitis: The role of autoimmune hepatitis features.

INTRODUCTION AND AIM: Primary biliary cholangitis is a rare disease with scarce epidemiological data in Southern Europe. The authors aimed to evaluate treatment response in a cohort of patients. MATERIALS AND METHODS: This retrospective observational single-centre study included patients with diagnostic criteria of primary biliary cholangitis. Data on disease presentation, laboratory results, treatment and clinical endpoints were collected and analyzed. RESULTS: Fifty-three patients were included, 89% women, with mean age of 62±15 years at diagnosis. The majority was asymptomatic (49%), tested positive for antimitochondrial antibodies (96%) and had increased alkaline phosphatase (median=214U/L). 75% of the patients had liver histology and the majority were in Ludwig's stage I (42%). Autoimmune hepatitis (AIH) features were found in seven patients (13%). All were treated with ursodeoxycholic acid (UDCA) and 56% achieved biochemical response at one year; patients with AIH features exhibited steeper decreases in alkaline phosphatase (p=0.007) and reached the endpoint of 40% decrease in alkaline phosphatase more frequently (p=0.017). CONCLUSION: In conclusion a significant proportion of patients failed to achieve an adequate response to UDCA treatment. The response rate of patients with AIH features was better, which could be related to a different phenotype or to the potential impact of immunosuppressive agents.

Effect of Polyethylene Terephthalate Tongue Scraper on Oral Levels of Volatile Sulfur Compounds: a randomized clinical trial / Efeito do raspador de língua de polietilenotereftalato nos níveis orais de compostos sulfurados voláteis: um ensaio clínico randomizado

Objective: To evaluate the effect of Polyethylene Terephthalate (PET) tongue scraper on the volatile sulfur compound (VSC) levels. Material and Methods: A randomized, controlled, parallel design was used in this study. Out of the 48 volunteers from Dentistry Department of the Federal University of Sergipe, 40 subjects who met the inclusion criteria were randomly divided into 4 groups (n=10): G1 (control), rinsing of distilled water solution (WS); G2, WS and tongue coating removal (TCR) with toothbrush; G3, WS and TCR with a commercial tongue scraper; and G4, WS and TCR with PET tongue scraper. PET bottles were cut with a rectangular shape (1.0 cm wide x 20 cm long) to obtain PET tongue scraper. The VSC measurements were performed before (T0) and immediately after (T1) each therapy by portable sulfide monitor. Data (ppb) were submitted to Wilcoxon test (α=0.05). The differences between T0 and T1 were calculated and percentage values were assigned. Data (percentage) were submitted to ANOVA and Tukey test (α=0.05). Results: All 40 selected subjects completed the study. All groups reduced significantly the VSC levels after therapy (P<0.01). ANOVA indicated a significant difference among groups (P<0.001). The Tukey test showed that G1 (reduction of 21%) was similar to G2 (31%); G2 was similar to G3 (42%) and different from G4 (52%); G3 and G4 were similar. Conclusion: PET tongue scraper was similar to commercial tongue scraper and provided higher reductions of VSC levels than the toothbrush. (AU)

Objetivo: Avaliar o efeito do raspador de língua de polietilenotereftalato (PET) nos níveis de compostos sulfurados voláteis (CSVs). Material e Métodos: Um desenho paralelo, controlado e randomizado foi empregado neste estudo. Dos 48 voluntários do Departamento de Odontologia da Universidade Federal de Sergipe, 40 atenderam ao critério de inclusão e foram distribuídos aleatoriamente em 4 grupos (n=10): G1 (controle), bochecho com solução de água destilada (SA); G2, SA e remoção da saburra lingual (RSL) com escova dental; G3, SA e RSL com um raspador de língua comercial; e G4, SA e RSL com raspador de língua PET. Garrafas PET foram recortadas com uma forma retangular (1,0 cm de largura x 20 cm de comprimento) para obtenção dos raspadores de língua PET. As mensurações de CSVs foram realizadas antes (T0) e imediatamente após (T1) cada terapia usando um monitor portátil de enxofre. Os dados (ppb) foram submetidos ao teste de Wilcoxon (α=0,05). As diferenças entre T0 e T1 foram calculadas e transformadas em valores percentuais de redução. Os dados (percentuais) foram submetidos à ANOVA e ao teste de Tukey (α=0,05). Resultados: Todos os 40 indivíduos selecionados completaram o estudo. Em todos os grupos houve redução significante dos níveis de CSVs após terapia (P<0,01). ANOVA indicou uma diferença significante entre grupos (PP<0,001). O teste de Tukey mostrou que G1 (redução de 21%) foi semelhante a G2 (31%); G2 foi semelhante a G3 (42%) e diferente de G4 (52%); G3 e G4 foram semelhantes. Conclusão: O raspador de língua PET foi semelhante ao raspador de língua comercial e proporcionou maiores reduções de CSVs do que a escova dental. (AU)

Revascularização venosa via transposição de veia gonadal esquerda em síndrome de nutcracker posterior: relato de caso / Venous revascularization to treat posterior nutcracker syndrome by transposition of the left gonadal vein: case report

A síndrome de nutcracker é manifesta na presença de um aprisionamento sintomático da veia renal esquerda entre a aorta abdominal e a artéria mesentérica superior. Uma variação mais efêmera desta desordem é dita síndrome de nutcracker posterior, quando a compressão da veia renal não mais ocorre frontalmente à aorta, mas posteriormente a ela, entre esta e a coluna vertebral. A despeito de variáveis opções terapêuticas, as técnicas presentes visam aliviar os sintomas e diminuir a pressão venosa da veia renal esquerda. Este relato descreve um caso de Síndrome de nutcracker posterior, em que a abordagem de escolha foi a cirurgia aberta, transpondo distalmente a veia gonadal esquerda na veia cava inferior

The Nutcracker Syndrome is manifest in the presence of a symptomatic entrapment of the left renal vein between the abdominal aorta and the superior mesenteric artery. In a more ephemeral variation of this disorder, called the Posterior Nutcracker Syndrome, the renal vein is not compressed anterior to the aorta, but posteriorly, between the artery and the spine. Although there are multiple treatment options, current techniques aim to relieve the symptoms and reduce venous pressure on the left renal vein. This report describes a case of Posterior Nutcracker Syndrome in which the management approach chosen was open surgery, transposing the gonadal vein distally, to the inferior cava vein

Increased Gastric Retention Capacity, Assessed by Scintigraphy, after APC Treatment of Dilated Gastrojejunal Anastomosis.

BACKGROUND: Weight regain occurs in about 20% of patients after Roux-en-Y gastric bypass (RYGB). Studies have reported that in most cases this regain is associated with dilatation of the gastrojejunal anastomosis. To correct this dilatation, one of the methods used is the application of argon plasma coagulation (APC). CASE: The authors report the case of a 39-year-old woman submitted to RYGB who had weight regain. In the endoscopic evaluation, the patient presented with dilatation of the gastrojejunal anastomosis, for which treatment with APC and an adjusted diet was proposed. After 3 sessions of APC, the patient presented with a reduction of the anastomosis diameter, weight loss, and increased satiety to food, with an increased gastric emptying time evidenced by scintigraphy. CONCLUSION: APC proved to be a safe and efficacious method.

INTRODUÇÃO: O reganho de peso após bypass gástrico em Y de Roux (RYGB) ocorre em cerca de 20% dos doentes. Estudos relatam que na maioria dos casos este reganho está associado a dilatação da anastomose gastrojejunal. Para corrigir esta dilatação um dos métodos utilizados é a apli-cação de árgon plasma (APC). CASO: Os autores relatam o caso de uma mulher de 39 anos de idade, submetida a RYGB, que apresentou reganho de peso. Na avaliação en-doscópica a doente apresentava dilatação da anastomose gastrojejunal sendo proposta a realização de APC e dieta ajustada. Após 3 sessões de APC, a doente apresentou redução do diâmetro da anastomose associada a perda de peso, aumento da saciedade alimentar e aumento do tempo de esvaziamento gástrico documentado em cintigrafia. CONCLUSÃO: O tratamento com APC mostrou ser um méto-do seguro e eficaz.

Intragastric Balloon Hyperinsufflation as a Cause of Acute Obstructive Abdomen.

Recently, the Food and Drug Administration approved the use of the Orbera balloon for obesity treatment. However, the Food and Drug Administration later issued a warning about the possibility of 2 complications not previously reported: acute pancreatitis and balloon hyperinsufflation. This case report is intended to alert all clinicians that, although rare, cases of hyperinsufflation should be considered in patients with an intragastric balloon (IGB) and acute abdomen. IGB removal will resolve the complaints, provided there is no irreversible ischemia of the stomach walls. Care should be taken with respect to an increased risk of pulmonary aspiration at the time of balloon removal, and endotracheal intubation is highly recommended.

Diagnóstico e tratamento da síndrome de quebra-nozes (nutcracker): revisão dos últimos 10 anos / Diagnosis and treatment of the Nutcracker syndrome: a review of the last 10 years

A síndrome de quebra-nozes é caracterizada por um grupo de manifestações clínicas que ocorrem por conta da compressão da veia renal esquerda. Seus principais sintomas são macro e micro-hematúria, proteinúria e dor no flanco. O diagnóstico é geralmente realizado após a exclusão de outras causas mais comuns, por conta da ausência de critérios clínicos para diagnóstico. Sua confirmação é feita por exames de imagem, com uso da ultrassonografia Doppler e tomografia computadorizada. O tratamento pode variar com as características do paciente e com a gravidade dos sintomas, e inclui o tratamento conservador, a cirurgia aberta e a cirurgia endovascular. Atualmente, a cirurgia aberta continua sendo a linha de frente, mas abordagens menos invasivas vêm ganhando cada vez mais espaço

The nutcracker syndrome is characterized by a group of clinical manifestations caused by compression of the Left Renal Vein. The main symptoms are: macro and micro hematuria, proteinuria, and flank pain. Diagnosis is usually made after excluding other causes, because there are no clinical criteria for diagnosis. Confirmation is by Doppler ultrasonography or computed tomography. Treatment can vary, depending on patient characteristics and the severity of the symptoms, while conservative treatment, open surgery, and endovascular surgery may be employed. Currently, open surgery is still the first-line treatment, but some less invasive approaches are gaining acceptance

Diagnosis and treatment of the Nutcracker syndrome: a review of the last 10 years.

The nutcracker syndrome is characterized by a group of clinical manifestations caused by compression of the Left Renal Vein. The main symptoms are: macro and micro hematuria, proteinuria, and flank pain. Diagnosis is usually made after excluding other causes, because there are no clinical criteria for diagnosis. Confirmation is by Doppler ultrasonography or computed tomography. Treatment can vary, depending on patient characteristics and the severity of the symptoms, while conservative treatment, open surgery, and endovascular surgery may be employed. Currently, open surgery is still the first-line treatment, but some less invasive approaches are gaining acceptance.

Pigmented hepatocellular adenoma with ß-catenin activation: case report and literature review.

 Hepatocellular adenomas (HCAs) are benign liver tumors recently characterized into 4 different types according to genetic, pathological and clinical features. The prognosis is not well established yet and malignant transformation has been recently associated with ß-catenin activation. We aimed to describe a case of a pigmented HCA with ß-catenin nuclear expression and inflammatory features and to review the cases of pigmented HCAs in the literature. We report a case of a young female patient without contraceptive use, with a liver tumor diagnosis. Liver biopsy revealed diffuse expression of ß-catenin and a partial hepatic resection was performed. The histologic analysis revealed a hepatocellular tumor composed of uniform trabeculae of hepatocytes and solid areas, the later with a significant amount of black pigment highlighted by Masson-Fontana stain. Immunohistochemistry showed co-expression of C-reactive protein and serum amyloid A in the tumor. Literature review revealed that pigmented HCAs, previously reported as dark adenomas, are rare tumors. In HCAs, the presence of ß-catenin activation should be searched for due to the higher risk of malignant transformation in hepatocarcinoma. We describe a pigmented HCA with ß-catenin nuclear expression and inflammatory features being the fifth case reported so far.

A modified surgical flap for root coverage in association with grafting materials.

PURPOSE: To clinically evaluate in humans the effectiveness of a modified flap for root coverage associated with connective tissue graft or acellular dermal matrix graft after a postoperative period of 12 months. MATERIALS AND METHODS: Thirty bilateral gingival recessions were selected and randomly assigned into experimental groups. All of them were treated with a modified surgical flap, with the releasing incisions placed on the mesial and distal line angles of the adjacent teeth, distant from the main defect, providing a broader flap. One site was treated with the autograft and the contralateral site, with the allograft. Probing depth, clinical attachment level, gingival recession, and keratinized tissue width were measured at baseline and after 12 months. RESULTS: Both procedures significantly improved the clinical parameters evaluated, without statistically significant differences between them. While the autograft group had a mean gingival recession reduction from 3.15 to 0.67 mm, in the allograft group, it was from 3.47 to 0.93 mm. CONCLUSION: The extended flap technique can improve the root coverage results using the subepithelial connective tissue graft or the acellular dermal matrix. CLINICAL SIGNIFICANCE: Graft survival plays a decisive role in mucogingival therapy results and the selection of the appropriate surgical technique is important to achieve it. This 12-month randomized study showed that an extended flap is able to improve the results of root coverage of localized gingival recessions not only when using the acellular dermal matrix as shown in a previous study, but also when using the subepithelial connective tissue. On this basis, this surgical technique can be suggested as the procedure of choice for treating this type of defect.

Differences in collagen distribution of healthy and regenerated periodontium. Histomorphometric study in dogs.

Previous studies have shown that there is a relationship between periodontal disease and the distribution of collagen fibers. This study evaluated the distribution of collagen types I and III in regenerated bone and periodontal ligament, comparing them to the tissues near the regenerated area and to the healthy periodontium. In the third (P3) and fourth (P4) mandibular premolars of 5 healthy mongrel dogs, bilaterally, buccal class 2 furcation lesions were surgically created and chronified for 3 weeks. After that, full flaps were elevated and expanded polytetrafluoroethylene (e-PTFE) membranes were adapted, sutured and recovered by the flaps. Two weeks after surgery, two membranes on the same side were removed and the other membranes were removed four weeks after surgery. The dogs were euthanized at 12 weeks following placement of the e-PTFE membranes. P3 and P4 teeth as well as the second premolars (healthy control teeth) and their periodontal tissues were removed and histologically processed for Collagen Quantification (COLQ). The amount of type III collagen was higher in native bone compared to the regenerated area. For periodontal ligament, COLQ for type I collagen showed statistically significant differences (Tukeys's Multiple Comparison, p⟨0.05) between the regenerated groups and the control group. These differences were not found for type III COLQ. There are significant differences in collagen distribution among the regenerated, native and control tissues. Membrane removal 2 or 4 weeks postoperatively did not influence the collagen composition.

Importância da Ortodontia no tratamento multidisciplinar da avulsão dentária: relato de caso clínico / Importance of orthodontics in the multidisciplinary treatment of thooth avulsion: a case report

Entre os tipos de traumatismos dentários, o que geralmente possui o prognóstico mais desfavorável é a avulsão dentária, principalmente por depender dos cuidados e medidas tomadas no local do acidente. Além disso, como consequência da avulsão, há o rompimento das fibras do ligamento periodontal e, a partir daí, segue-se uma série de eventos biológicos que podem resultar em necrose pulpar, anquilose e reabsorção da raiz. Nesses casos, a movimentação dentária deve ser protelada até que se complete um ano após o evento traumático. A aplicação de matriz derivada do esmalte tem sido indicada para esses casos como fator de regeneração periodontal e como medida profilática ao desenvolvimento de reabsorção radicular e anquilose. O presente trabalho tem a finalidade de apresentar um caso multidisciplinar com histórico de avulsão traumática e reimplante, que foi submetido a tratamento ortodôntico e aplicação de Emdogain. A abordagem multidisciplinar para esses casos é de fundamental importância para o sucesso do tratamento, ou seja, para a manutenção do dente no alvéolo, proporcionando um sorriso mais harmonioso e preservando tecido ósseo e tecido mole até que seja possível o tratamento reabilitador com implante e prótese.