Prognostic significance of histopathological factors in survival and recurrence of atypical carcinoid tumours.

OBJECTIVES: Atypical carcinoids are neuroendocrine neoplasms of intermediate degree and low frequency. The aim of this study is to analyse their clinical characteristics and the importance of different histopathological factors in their prognosis. METHODS: Multicentre cooperative group EMETNE prospectively reviewed 153 patients operated on between 1998 and 2016 with diagnosis of atypical carcinoids. Clinical variables and histopathological features were assessed. RESULTS: Mean age was 54.36 years, similar for both genders. Concerning pathological study, mean tumour size was 31.7 mm. Rosettes were presented in 17% of the cases and tumoural necrosis in 23.3%. The cell proliferation factor Ki-67 index was 10.7%. The 2- and 5-year overall survival rates were 95.8% and 88.9%, respectively. In the univariate study, statistically significant differences in survival were found for each of the categories of T, N and M factors. Mitotic index and quantification of expression of Ki-67 showed influence in overall survival, although without statistical significance. In the multivariate analysis, factors N, M and mitotic index behaved as independent prognostic factors related to survival. Median disease-free interval in the series was 163.35 months. In cases with loco-regional recurrence, 53% had positive hiliar or mediastinal nodal involvement at the time of the surgery. In the univariate analysis, we observed statistically significant differences in disease-free interval in patients with nodal involvement (P = 0.024) and non-anatomical resections (P = 0.04). Histological characteristics showed no statistically significant differences in disease-free interval. CONCLUSIONS: Lymph node involvement, the development of distant metastasis and mitotic index, more than Ki-67 determination, were shown as independent prognostic factors related to survival of these patients.

Thyroid Papillary Microtumor: Validation of the (Updated) Porto Proposal Assessing Sex Hormone Receptor Expression and Mutational BRAF Gene Status.

Given the high incidence and excellent prognosis of many papillary thyroid microcarcinomas, the Porto proposal uses the designation papillary microtumor (PMT) for papillary microcarcinomas (PMCs) without risk factors to minimize overtreatment and patients' stress. To validate Porto proposal criteria, we examined a series of 190 PMC series, also studying sex hormone receptors and BRAF mutation. Our updated Porto proposal (uPp) reclassifies as PMT incidental PMCs found at thyroidectomy lacking the following criteria: (a) detected under the age of 19 years; (b) with multiple tumors measuring >1 cm adding up all diameters; and (c) with aggressive morphologic features (extrathyroidal extension, angioinvasion, tall, and/or hobnail cells). PMCs not fulfilling uPp criteria were considered "true" PMCs. A total of 102 PMCs were subclassified as PMT, 88 as PMC, with no age or sex differences between subgroups. Total thyroidectomy and iodine-131 therapy were significantly more common in PMC. After a median follow-up of 9.6 years, lymph node metastases, distant metastases, and mortality were only found in the PMC subgroup. No subgroup differences were found in calcifications or desmoplasia. Expression of estrogen receptor-α and estrogen receptor-ß, progesterone receptor, and androgen receptor was higher in PMC than in nontumorous thyroid tissue. BRAF mutations were detected in 44.7% of PMC, with no differences between subgroups. In surgical specimens, the uPp is a safe pathology tool to identify those PMC with extremely low malignant potential. This terminology could reduce psychological stress associated with cancer diagnosis, avoid overtreatment, and be incorporated into daily pathologic practice.

Frailty, disability and comorbidity: different domains lead to different effects after surgical aortic valve replacement in elderly patients.

OBJECTIVES: Frailty syndrome predicts adverse outcomes after surgical aortic valve replacement. However, disability or comorbidity is frequently associated with preoperative frailty evaluation. The effects of these domains on early and late outcomes were analysed. METHODS: A prospective study including patients aged ≥75 years with symptomatic severe aortic stenosis who received aortic valve replacement with or without coronary artery bypass grafting was conducted. We used the Cardiovascular Health Study Frailty Phenotype to assess frailty, the Lawton-Brody index to define disability and the Charlson comorbidity index (CCI) to evaluate comorbidity. RESULTS: Frailty was identified in 57 (31%), dependence in 18 (9.9%) and advanced comorbidity (CCI ≥ 4) in 67 (36.6%) of the 183 enrolled patients. Operative mortality (1.6%), transfusion rate and duration of stay increased in patients with CCI ≥4 (P < 0.005). There was a non-significant trend for these adverse outcomes among the frail patients. Follow-up was achieved in all patients (median/interquartile range 869/699-1099 days). Kaplan-Meier univariable analysis showed a reduced survival rate for frail and dependent patients and for those with multiple comorbidities (P < 0.05). According to multivariable analysis, frailty and comorbidity were independent risk factors for 1-year mortality, while disability and comorbidity, but not frailty, were risk factors for 3-year mortality (P < 0.05). CONCLUSIONS: Surgical aortic valve replacement in patients aged ≥75 years is a safe procedure with low mortality rates. Operative outcomes are mainly affected by comorbidities. The main influence of survival occurs throughout the first year, and an improved functional status prevents any progression towards disabilities, which could potentially benefit long-term outcomes. CLINICAL TRIAL REGISTRATION NUMBER: NCT02745314.

Cirugía mayor ambulatoria: dónde estamos y adónde vamos / Major ambulatory surgery: Where we are and where are we going

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Aggressiveness of the tall cell variant of papillary thyroid carcinoma is independent of the tumor size and patient age.

The tall cell variant (TCV) of papillary thyroid carcinoma (PTC) is characterized by tall columnar cells with a height of at least three times their width. TCV usually presents at an older age, has a larger size and exhibits more extrathyroidal extension and metastases than classical PTC. The current study compared TCV with the classical and follicular variants (CaFVs) of PTC to determine if, irrespective of the age at diagnosis and tumor size, TCV is more aggressive than its classical and follicular counterparts. A total of 16 (3.66%) patients with TCV were identified in a series of 437 patients with PTC from the Clinical University Hospital (Santiago de Compostela, Spain) between 1990 and 2010. The patient clinicopathological features and B-Raf proto-oncogene (BRAF)V600E mutational status were compared with 34 cases of CaFVs of PTC matched for tumor size and patient age. The TCV series included 11 females and 5 males aged 15-74 years (median, 57 years). In total, 15 (93.8%) patients underwent total or near-total thyroidectomy, 1 underwent lobectomy and 5 (31.3%) underwent lymph node dissection. In the TCV series, the tumor size ranged from 5-45 mm (median, 19 mm). Compared with the CaFVs, the TCV of PTC exhibited a significantly higher prevalence of extrathyroidal extension [9/16 (56.3%) vs. 5/34 (14.7%) cases; P=0.007], lymph node metastases [9/16 (56.3%) vs. 9/34 (26.4%) cases; P=0.04], stage III/IV at presentation [10/16 (62.5%) vs. 7/34 (20.5%) cases; P=0.009] and BRAFV600E mutation [12/16 (80.0%) vs. 7/25 (28.0%) cases; P=0.004]. The TCV series also harbored more multifocal papillary carcinomas (50.0% vs. 26.4%), lymphovascular invasion (37.5% vs. 29.4%) and distant metastases (6.2% vs. 0.0%), as compared with the matched patient cohort. In conclusion, the TCV of PTC is frequently associated with BRAFV600E mutation and is more aggressive than the CaFVs of PTC, regardless of tumor size and patient age at diagnosis.

Comentarios sobre 'Carcinoma de tiroides incidental versus no incidental: presentación clínica, tratamiento quirúrgico y pronóstico' / Comments on 'Incidental versus non-incidental thyroid carcinoma: Clinical presentation, surgical management and prognosis'

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Procalcitonina y proteína C reactiva como marcadores precoces de infección intraabdominal postoperatoria en pacientes operados de cáncer gastrointestinal / Procalcitonin and C-reactive protein as early indicators of postoperative intra-abdominal infection after surgery for gastrointestinal cancer

OBJETIVO: Evaluar la asociación entre niveles séricos de procalcitonina (PCT) y proteína C reactiva (PCR), en los 3 primeros días de postoperatorio, y la aparición de infección intraabdominal postoperatoria. MÉTODO: Estudio observacional prospectivo que incluye a 67 pacientes intervenidos quirúrgicamente de cáncer colorrectal, gástrico y pancreático. Los niveles séricos de PCT y PCR se midieron antes de la cirugía y a las 24, 48 y 72 h de la misma. Se registraron los valores de PCT y PCR, así como su fiabilidad para la detección de infección intraabdominal postoperatoria. RESULTADOS: La incidencia de infección intraabdominal postoperatoria fue de 13,4%. Los valores de PCR a las 72 h, los valores de PCT a las 24, 48 y 72 h y el cociente entre el valor de PCR a las 72 h y el valor de PCR a las 48 h (PCR D3/PCR D2) se asociaron significativamente con la aparición de infección intraabdominal postoperatoria. La sensibilidad más alta correspondió al valor de PCT a las 72 h (88,9%); la especificidad más alta y el valor predictivo positivo (VPP) más alto, al cociente PCR D3/PCR D2 (96,49 y 71,4%, respectivamente); el valor predictivo negativo (VPN) más alto, al valor de PCT a las 72 h y a las 24 h (97,7 y 96%, respectivamente). CONCLUSIÓN: Los valores de PCT se asocian significativamente con la aparición de infección intraabdominal postoperatoria en los 3 primeros días de postoperatorio. Su sensibilidad y VPP son bajos, pero su VPN es alto, incluso a las 24 h de la cirugía

AIM: to evaluate the association between serum levels of procalcitonin and C-reactive protein, on the first 3 postoperative days, and the appearance of postoperative intra-abdominal infection. METHOD: Prospective observational study including 67 patients operated on for colo-rectal, gastric and pancreatic cancer. Serum levels of procalcitonin and C-reactive protein were analyzed before surgery and daily until the third postoperative day. Values of procalcitonin (PCT) and C-reactive protein (CRP) were recorded as well as their accuracy for detection of postoperative intra-abdominal infection (PIAI). RESULTS: The incidence of postoperative intra-abdominal infection was 13.4%. CRP serum levels at 72 h, PCT serum levels at 24, 48 and 72 h and the ratio between serum levels of CRP at 72 hours and serum levels of CRP at 48 hours (CRP D3/CRP D2) were significantly associated with the appearance of postoperative intra-abdominal infection. The highest sensitivity corresponded to PCT at 72 hours (88.9%); the highest specificity and positive predictive value corresponded to the ratio CRP D3/CRP D2 (96.49% and 71.4%, respectively); the highest negative predictive value to procalcitonin at 72 h and 24 h. CONCLUSIONS: Serum levels of PCT are significantly associated with the appearance of postoperative intra-abdominal infection. Sensitivity and predictive positive values are low, but negative predictive value is high, even at 24 h after surgery

[Procalcitonin and C-reactive protein as early indicators of postoperative intra-abdominal infection after surgery for gastrointestinal cancer]. / Procalcitonina y proteína C reactiva como marcadores precoces de infección intraabdominal postoperatoria en pacientes operados de cáncer gastrointestinal.

AIM: to evaluate the association between serum levels of procalcitonin and C-reactive protein, on the first 3 postoperative days, and the appearance of postoperative intra-abdominal infection. METHOD: Prospective observational study including 67 patients operated on for colo-rectal, gastric and pancreatic cancer. Serum levels of procalcitonin and C-reactive protein were analyzed before surgery and daily until the third postoperative day. Values of procalcitonin (PCT) and C-reactive protein (CRP) were recorded as well as their accuracy for detection of postoperative intra-abdominal infection (PIAI). RESULTS: The incidence of postoperative intra-abdominal infection was 13.4%. CRP serum levels at 72h, PCT serum levels at 24, 48 and 72h and the ratio between serum levels of CRP at 72hours and serum levels of CRP at 48hours (CRP D3/CRP D2) were significantly associated with the appearance of postoperative intra-abdominal infection. The highest sensitivity corresponded to PCT at 72hours (88.9%); the highest specificity and positive predictive value corresponded to the ratio CRP D3/CRP D2 (96.49% and 71.4%, respectively); the highest negative predictive value to procalcitonin at 72h and 24h. CONCLUSIONS: Serum levels of PCT are significantly associated with the appearance of postoperative intra-abdominal infection. Sensitivity and predictive positive values are low, but negative predictive value is high, even at 24h after surgery.

Prótesis en el tratamiento de las eventraciones / Prosthetic material in incisional hernia surgery

Diferentes y numerosas prótesis han sido diseñadas para facilitar la reparación de las eventraciones y es de esperar que se diseñen más en el futuro. En este contexto es difícil escoger la más adecuada. El comportamiento biológico del material debe ser una parte fundamental en la selección, aunque este comportamiento variará en función de las características de las diferentes prótesis de que se dispone. Un adecuado conocimiento de la relación del material con la dinámica de la pared abdominal es otro elemento importante a la hora de seleccionar. Finalmente, se ha de tener una idea de lo que se puede esperar de las prótesis para una reparación estable y sin efectos secundarios a largo plazo. En este trabajo se analiza el panorama protésico más comúnmente disponible para la cirugía de las eventraciones en situación no urgente (AU)

There are different designs of prosthesis for use in the repair of incisional hernia, and it is often difficult to choose the most appropriate. The biological behaviour of the material must be a key part in the selection, although this behaviour will vary depending on what materials are available. A proper understanding of the relationship of the material with the abdominal wall dynamics is another important factor in this selection. Finally we need a stable repair without long term side effects. This paper analyses the prostheses more commonly available for incisional hernia surgery in the non-emergency situation (AU)

[Prosthetic material in incisional hernia surgery]. / Prótesis en el tratamiento de las eventraciones.

There are different designs of prosthesis for use in the repair of incisional hernia, and it is often difficult to choose the most appropriate. The biological behaviour of the material must be a key part in the selection, although this behaviour will vary depending on what materials are available. A proper understanding of the relationship of the material with the abdominal wall dynamics is another important factor in this selection. Finally we need a stable repair without long term side effects. This paper analyses the prostheses more commonly available for incisional hernia surgery in the non-emergency situation.

Early or delayed laparoscopic cholecystectomy in acute cholecystitis? Conclusions of a controlled trial.

BACKGROUND/AIMS: Laparoscopic cholecystectomy is now accepted as being safe for acute cholecystitis. However, it has not become routine, because the exact timing and approach to the surgical management remains ill defined. This study evaluated the effect of timing of LC in patients with acute cholecystitis. METHODOLOGY: Group 1, those patients who had LC for AC within 72 hours was compared with group 2, those who had LC for AC after 72 hours. Univariate logistic regression analysis and multivariate regression analysis were used to determine if any factors had a significant association with the complications, postoperative hospital stay, and conversion index. A value of p < 0.05 was considered statistically significant. RESULTS: Comparing the two groups, the conversion rate to an open procedure was significantly less (7.8% versus 18.4%, P_0.02) in the early treated patients. Furthermore, postoperative hospitalization (6.5 versus 9.5 days, P 0.01), and complications (8.8% versus 17.7%, P _0.02) were significantly reduced in patients undergoing early laparoscopic cholecystectomy. CONCLUSION: There is no advantage to delaying cholecystectomy for acute cholecystitis on the basis of outcomes in complications, rate of conversion to open surgery, and mean hospital stay. Thus, early cholecystectomy should be be the preferred surgical approach for patients with acute lithiasic cholecystitis.

Cirugía de la hernia: nuevos conceptos y nuevas perspectivas / Hernia surgery: new concepts and new perspectives

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