Corrigendum: Update on genistein and thyroid: an overall message of safety.

[This corrects the article DOI: 10.3389/fendo.2012.00094.].

Thyroid Cancer Persistence in Patients with Unreliable Thyroglobulin Measurement: Circulating microRNA as Candidate Alternative Biomarkers.

BACKGROUND: We aimed to evaluate the role of circulating miRNAs as a biomarker of the persistence of papillary thyroid cancer (PTC) in patients with an "uninformative" thyroglobulin (Tg) measurement. METHODS: We prospectively enrolled 49 consecutive PTC patients with Tg-positive antibodies (TgAb) who had undergone a (near)-total thyroidectomy and 131I therapy (RIT). The serum thyroid stimulating hormone (TSH), Tg, and TgAb levels were measured before and at 6 and 12 months after RIT, respectively. The serum miRNA (221, 222, 375, 155, and 146b) levels were measured simultaneously. RESULTS: The response to the initial therapy was assessed according to the 2015 ATA criteria. A decrease in 50% or more of serum miRNA over time was observed in 41/49 PTC patients, who showed an excellent response (ER), but six and two patients were classified to have an indeterminate/incomplete biochemical or incomplete structural response to initial therapy. CONCLUSION: Serum miRNA kinetics emerge as a promising biomarker for the early detection of a persistent disease in PTC patients with uninformative Tg results.

Methylome Analysis in Nonfunctioning and GH-Secreting Pituitary Adenomas.

Pituitary adenomas (PAs), usually benign lesions, can sometimes present with "aggressive" features (rapid growth, local invasiveness, scarce response to conventional treatments). Despite the fact that a few genetic alterations have been associated to this clinical behavior, the role of epigenetic modifications, mainly methylation and miRNAs activity, is now opening new frontiers in this field. We evaluated the methylation profile of 21 PA (11 GH-omas, 10 nonfunctioning tumors-NFPAs) samples from TNS surgery and 5 normal pituitaries, collected at our neurosurgery between 2015 and 2017. DNA was extracted and sequenced, selecting 184,841 target regions. Moreover, methylation profiles were correlated with demographic, radiological, and clinicopathological features. NFPAs showed higher methylation levels vs. GH-omas, with 178 differentially methylated regions (DMRs) mainly consisting of noncoding and intronic sequences, and mostly localized in the open sea regions. We also found three hypermethylated genes (C7orf50, GNG7, and BAHCC1) involved in tumorigenesis processes and potentially influencing pituitary tumor pathophysiology. Among the clinicopathological features, only the maximum diameter resulted significantly higher in NFPAs. Our data provide further evidence of the complex epigenetic background of pituitary tumors. In line with the current literature, we confirmed a significant prevalence of hypermethylation in NFPAs vs. GH-omas, whose pathophysiological consequence is yet to be defined.

CXCL12/CXCR4 axis supports mitochondrial trafficking in tumor myeloma microenvironment.

Mesenchymal stromal cells (MSCs) within the protective microenvironment of multiple myeloma (MM) promote tumor growth, confer chemoresistance and support metabolic needs of plasma cells (PCs) even transferring mitochondria. In this scenario, heterocellular communication and dysregulation of critical signaling axes are among the major contributors to progression and treatment failure. Here, we report that myeloma MSCs have decreased reliance on mitochondrial metabolism as compared to healthy MSCs and increased tendency to deliver mitochondria to MM cells, suggesting that this intercellular exchange between PCs and stromal cells can be consider part of MSC pro-tumorigenic phenotype. Interestingly, we also showed that PCs promoted expression of connexin 43 (CX43) in MSCs leading to CXCL12 activation and stimulation of its receptor CXCR4 on MM cells favoring protumor mitochondrial transfer. Consistently, we observed that selective inhibition of CXCR4 by plerixafor resulted in a significant reduction of mitochondria trafficking. Moreover, intracellular expression of CXCR4 in myeloma PCs from BM biopsy specimens demonstrated higher CXCR4 colocalization with CD138+ cells of non-responder patients to bortezomib compared with responder patients, suggesting that CXCR4 mediated chemoresistance in MM. Taken together, our data demonstrated that CXCL12/CXCR4 axis mediates intercellular coupling thus suggesting that the myeloma niche may be exploited as a target to improve and develop therapeutic approaches.

SIRT2 and SIRT3 expression correlates with redox imbalance and advanced clinical stage in patients with multiple myeloma.

OBJECTIVES: Sirtuins comprise seven family elements (SIRT1-7) involved in various cell signalling pathways comprising cancer inhibition and tumorigenesis. The present study aims to evaluate SIRT2 and SIRT3 gene expression and potential redox reactions in patients with multiple myeloma (MM) at onset and its correlation with disease status, extent and presence of organ damage secondary to myeloma. DESIGN & METHODS: Total RNA was extracted from 17 MM patients and 10 controls to assess gene expression using real-time PCR. The NAD+/NADH ratio as well as the levels of glutathione peroxidase (GPx) and hydrogen peroxide (HP) in peripheral blood mononuclear cells (PBMCs) were determined using established biochemical assays. RESULTS: SIRT2 and SIRT3 expression is reduced in MM patients compared to healthy controls. Correlational analysis demonstrated that SIRT2 reduction is associated with advanced clinical stage and with more advanced bone lesions than in the remaining patients. SIRT3 expression is correlated with lytic bone lesions. Biochemical analysis indicated an imbalance of oxidative stress biomarkers with low concentrations of the antioxidant enzyme GPx, low amounts of NAD + and higher concentrations of pro-oxidant enzyme HP in PBMCs of MM patients compared to controls. Moreover, MM patients with bone lesions had lower concentrations of NAD + and GPx in PBMCs than patients without signs of bone disease. In addition, MM patients had higher quantities of intracellular HP than controls. CONCLUSIONS: Our results demonstrate that SIRT2 and SIRT3 are downregulated in MM and that lower concentrations correlate with an advanced stage of disease and redox imbalance. We conclude that SIRT2 and SIRT3 together with oxidative stress biomarkers, may be useful for improved risk stratification of MM patients.

Nusinersen Modulates Proteomics Profiles of Cerebrospinal Fluid in Spinal Muscular Atrophy Type 1 Patients.

Spinal muscular atrophy (SMA) type 1 is a severe infantile autosomal-recessive neuromuscular disorder caused by a survival motor neuron 1 gene (SMN1) mutation and characterized by progressive muscle weakness. Without supportive care, SMA type 1 is rapidly fatal. The antisense oligonucleotide nusinersen has recently improved the natural course of this disease. Here, we investigated, with a functional proteomic approach, cerebrospinal fluid (CSF) protein profiles from SMA type 1 patients who underwent nusinersen administration to clarify the biochemical response to the treatment and to monitor disease progression based on therapy. Six months after starting treatment (12 mg/5 mL × four doses of loading regimen administered at days 0, 14, 28, and 63), we observed a generalized reversion trend of the CSF protein pattern from our patient cohort to that of control donors. Notably, a marked up-regulation of apolipoprotein A1 and apolipoprotein E and a consistent variation in transthyretin proteoform occurrence were detected. Since these multifunctional proteins are critically active in biomolecular processes aberrant in SMA, i.e., synaptogenesis and neurite growth, neuronal survival and plasticity, inflammation, and oxidative stress control, their nusinersen induced modulation may support SMN improved-expression effects. Hence, these lipoproteins and transthyretin could represent valuable biomarkers to assess patient responsiveness and disease progression.

Serum levels of miRNA-21-5p in vitiligo patients and effects of miRNA-21-5p on SOX5, beta-catenin, CDK2 and MITF protein expression in normal human melanocytes.

BACKGROUND: Epigenetics of vitiligo was evaluated in few studies. In particular, the role of miR-21, a microRNA involved in various processes, including melanogenesis, was never investigated. OBJECTIVE: Evaluation of serum levels of miR-21-5p in vitiligo patients and miR-21-5p effects on melanogenesis. METHODS: We measured serum levels of miR-21-5p in 40 patients affected by nonsegmental vitiligo and 40 sex- and age-matched healthy controls. Next, normal human melanocytes were transfected with miR-21-5p to study the effects of this microRNA, which targeted some proteins involved in melanogenesis pathway like SOX5, beta-catenin, cyclin-dependent kinase 2 (CDK2), and MITF. RESULTS: The expression of miR-21-5p in vitiligo patients was 3.6-4454.4 fold (mean 990.4 ± 1397.9) higher than in controls. The relative expression of miR-21-5p was directly and significantly correlated with disease severity, defined by VASI (Vitiligo Area and Severity Index) score (Rho = 0.89, p = 10-7), but not other individual or clinical characteristics. In the second part of the study, a significant reduction of SOX5, beta-catenin and CDK2 protein expression and increase of MITF protein expression was observed in cultured melanocytes after 24 h trasfection with miR-21-5p. CONCLUSION: According to literature, miR-21-5p upregulation and consequent SOX5 downregulation should upregulate melanogenesis, while vitiligo is characterized by skin depigmentation. Our results suggest that current knowledge of the pathogenesis of vitiligo is probably incomplete. Clinical manifestations could result from an altered balance between metabolic pathways with contrasting effects. In this view, miR-21-5p upregulation might be a tentative compensation mechanism. Further studies appear necessary to confirm and better understand our results and their importance.

microRNA-10 and -221 modulate differential expression of Hippo signaling pathway in human astroglial tumors.

Gliomas represent over 70% of all brain tumors, they are highly invasive and structurally vascular neoplasms. Despite the latest technological advance in neuro-surgery the survival of patients with high-grade glioma remains poor. The lack of robust treatment options has propelled the search for new markers that may able allow the identification of patients who can benefit from molecularly targeted therapies. The Hippo signaling pathway is considered as a key regulator of tissue homeostasis, cell proliferation and apoptosis, and alterations of this pathway seem to contribute to tumorigenesis. Yes-associated protein (YAP1) is a downstream target of the Hippo pathway which acts as a transcription co-activator. In cancer, YAP1 has been reported to function either as an oncogene or tumor suppressor, depending on the cell context. The aim of this study was to examine the expression of YAP1, Survivin and LATS1 kinase activity in human astroglial tumors with different grades of malignancy. Moreover, we also investigated the expression of miR-221 and miR-10b and their relationship with core molecules of the Hippo pathway. Our results showed the overexpression of YAP1 and Survivin as well as a decreased activity of large tumor suppressor 1 (LATS1) in high-grade glioblastoma versus anaplastic astrocytoma and low-grade glioma. Furthermore, we also demonstrated that miR-221 and miR-10b are specifically involved in Hippo signaling via LATS1 regulation and that their knockdown significantly decreased glioma cell proliferation. This preliminary data confirmed the crucial role of the Hippo pathway in cancer and suggested that miR-221 and miR-10b could be potential therapeutic targets for glioma treatment.

Circulating microRNAs Profile in Patients With Transthyretin Variant Amyloidosis.

Transthyretin variant amyloidosis (ATTRv) is a rare autosomal dominant disease characterized by the accumulation of amyloid in many organs, mostly causing a sensory-motor neuropathy, cardiomyopathy, and dysautonomia. The aim of the study was to report microRNAs (miRNAs) expression profile identified in the blood of ATTRv patients. Ten ATTRv patients, 10 asymptomatic carriers of transthyretin variant (TTRv), 10 patients with Charcot-Marie-Tooth (CMT) disease, and 10 healthy controls were studied. Human Schwann cells cultures were used to study the regulatory effects of miR-150-5p on the expression of cAMP response element-binding protein (CREB), brain-derived neurotrophic factor (BDNF), and nerve growth factor (NGF). ATTRv patients had 33 miRNAs up-regulated and 48 down-regulated versus healthy controls; 9 miRNAs were up-regulated and 30 down-regulated versus CMT patients; 19 miRNAs were up-regulated and 38 down-regulated versus asymptomatic TTRv carriers. Twelve out of the 19 upregulated miRNAs had a fold increase higher than 100. The validation experiment indicated miR-150-5p as a valuable biomarker to differentiate ATTRv patients from asymptomatic TTRv carriers (AUC: 0.9728; p < 0.0001). Schwann cells culture model demonstrated that miR-150-5p is a powerful negative regulator of CREB, BDNF, and NGF genes. Identification of deregulated miRNAs can help in understanding the complex pathomechamism underlying the development of ATTRv and related multisystemic pathology. Further investigations are needed on the role of circulating miR-150-5p to predict the shift of TTRv carriers from an asymptomatic status to symptoms appearance.

Effect of exercise on telomere length and telomere proteins expression in mdx mice.

In Duchenne muscular dystrophy (DMD), telomere shortening has been postulated to contribute to the failure of regenerative activity promoting the premature senescence of satellite cells. The aim of the present study was to investigate the telomere length and the expression of telomeric repeat-binding factor-1 (TRF1), poly (ADP-ribose) polymerase-1 (PARP1) and mouse telomerase reverse transcriptase (MTERT) in gastrocnemius, tibialis anterior and diaphragm muscles of the murine model of DMD, the mdx mouse and whether a chronic protocol of forced exercise impacts on them. Our results confirmed a telomere shortening in mdx muscles, more evident in the diaphragm, in which exercise induced a greater shortening than in wild-type mice. Moreover, we showed for the first time in mdx an increased TRF1 and PARP1 expression and an augmented activity of MTERT, further enhanced by exercise. These results reinforce the hypothesis that a deregulation of mechanisms involved in telomere length occurs and may pave the way for the test of compounds targeting proteins modulating telomere maintenance as a novel strategy to treat dystrophinopathies.

Circulating miRNAs expression as potential biomarkers of mild traumatic brain injury.

TBI is the main cause of death and disability in individuals aged 1-45 in Western countries. One of the main challenges of TBI at present is the lack of specific diagnostic biomarkers, especially for mild TBI (mTBI), which remains currently difficult to value in clinical practice. In this context MiRNAs may be important mediators of the profound molecular and cellular changes that occur after TBI in both the short and the long term. Recently, plasma miRNAs profiling in human TBI, have revealed dynamic temporal regulation of miRNA expression within the cortex. Aim of this study was to select a specific miRNAs panel for mTBI, by focusing the research on the prognostic meaning of miRNAs in the hours following the trauma, in order to be able to use this MIRNAs as potential biomarkers useful for monitoring the follow up of mild TBI. Serum levels of 17 miRNAs were measured by RT-quantitative polymerase chain reaction (qPCR) in 20 patients with mTBI at three different time-points (0 h, 24 h, 48 h) and in 10 controls. For 15 miRNAs we found a significant differences in the comparison among the three time points: for each of these miRNAs the values were greater at baseline and progressively reduced at 24 h and 48 h. These data allow us to consider the miRNAs included in panel as sensitive and specific biomarkers for mTBI, useful in monitoring the post-trauma period.

Hippo signaling pathway is altered in Duchenne muscular dystrophy.

Hippo signaling pathway is considered a key regulator of tissue homeostasis, cell proliferation, apoptosis and it is involved in cancer development. In skeletal muscle, YAP, a downstream target of the Hippo pathway, is an important player in myoblast proliferation, atrophy/hypertrophy regulation, and in mechano-trasduction, transferring mechanical signals into transcriptional responses. We studied components of Hippo pathway in muscle specimens from patients with Duchenne muscular dystrophy (DMD), Becker muscular dystrophy, limb-girdle muscular dystrophy type 2A and type 2B and healthy subjects. Only DMD muscles had decreased YAP1 protein expression, increased LATS1/2 kinase activity, low Survivin mRNA expression and high miR-21 expression. In light of our novel results, a schematic model is postulated: low levels of YOD1 caused by increased inhibition by miR-21 lead to an increase of LATS1/2 activity which in turn augments phosphorylation of YAP. Reduced amount of active YAP, which is also a target of increased miR-21, causes decreased nuclear expression of YAP-mediated target genes. Since it is known that YAP has beneficial roles in promoting tissue repair and regeneration after injury so that its activation may be therapeutically useful, our results suggest that some components of Hippo pathway could become novel therapeutic targets for DMD treatment.

Autoimmunity to heterogeneous nuclear ribonucleoprotein A1 in psoriatic patients and correlation with disease severity.

BACKGROUND AND OBJECTIVES: The heterogeneous nuclear ribonucleoprotein A1 (hnRNP-A1) has been postulated as an autoantigen of psoriasis, but correlation between serum levels of anti-hnRNP-A1 autoantibodies and the severity of disease has not been investigated. We aimed to assess the frequency of anti-hnRNP-A1 autoimmunity in patients with moderate to severe psoriasis and in healthy controls, and to determine the correlation between serum levels of anti-hnRNP-A1 autoantibodies and disease severity. PATIENTS AND METHODS: We performed a case-control study on 40 adult psoriatic patients with a PASI (Psoriasis Area and Severity Index) of > 10 and 40 healthy controls matched for age and gender. Immunoblotting was used to assess serum levels of anti-hnRNP-A1 autoantibodies. RESULTS: Anti-hnRNP-A1 autoantibodies were found in 9/40 psoriatic patients (22.5 %) but in no healthy controls. The PASI was significantly higher in anti-hnRNP-A1-positive patients than in anti-hnRNP-A1-negative patients (40.33 ± 3.24 vs 26.06 ± 9.28, p = 0.0001). In patients positive for anti-hnRNP-A1, serum levels of such autoanti-bodies were correlated with the PASI (R = 0.89, p = 0.001). CONCLUSIONS: Consistent with reports in the literature, our results suggest a role of anti-hnRNP-A1 autoimmunity in psoriasis, although probably not as the primary cause or initial/fundamental event. Unlike previously published reports, our results also suggest that anti-hnRNP-A1 autoimmunity is particularly frequent among psoriatic patients with more severe disease. Further studies are necessary with a larger number of patients.

Autoimmunität gegen heterogenes nukleäres Ribonukleoprotein A1 bei Psoriasispatienten und Korrelation mit dem Schweregrad der Erkrankung.

HINTERGRUND UND ZIELE: Das heterogene nukleäre Ribonukleoprotein A1 (hnRNP-A1) wurde als Autoantigen bei Psoriasis vorgeschlagen; eine mögliche Korrelation zwischen dem Serumspiegel von Anti-hnRNP-A1-Antikörpern und dem Schweregrad der Erkrankung wurde bislang nicht untersucht. Unser Ziel war es, die Häufigkeit der Anti-hnRNP-A1-Autoimmunität bei Patienten mit mäßig schwerer bis schwerer Psoriasis und gesunden Kontrollpersonen zu bestimmen und festzustellen, ob eine Korrelation zwischen dem Anti-hnRNP-A1-Autoantikörper-Serumspiegel und dem Schweregrad der Erkrankung besteht. PATIENTEN UND METHODEN: Wir führten eine Fallkontrollstudie an 40 erwachsenen Psoriasispatienten mit einem Psoriasis Area and Severity Index (PASI) von > 10 und 40 gesunden Kontrollpersonen mit ähnlicher Alters- und Geschlechtsverteilung durch. Die Bestimmung des Serumspiegels von hnRNP-A1-Autoantikörpern erfolgte mit Immunoblots. ERGEBNISSE: Anti-hnRNP-A1-Autoantikörper wurden bei 9 von 40 Psoriasispatienten (22,5 %) nachgewiesen, jedoch bei keiner der gesunden Kontrollpersonen gefunden. Der PASI-Wert war bei Anti-hnRNP-A1-positiven Patienten signifikant höher als bei Anti-hnRNP-A1-negativen Patienten (40,33 ± 3,24 vs. 26,06 ± 9,28, p  =  0,0001). Bei Anti-hnRNP-A1-positiven Patienten korrelierte der Serumspiegel der Autoantikörper mit dem PASI-Wert (R = 0,89, p = 0,001). SCHLUSSFOLGERUNGEN: Übereinstimmend mit Berichten aus der Literatur legen unsere Ergebnisse nahe, dass Anti-hnRNP-A1-Autoimmunität bei Psoriasis eine Rolle spielt, wenn auch möglicherweise nicht als primäre Ursache oder als initiales oder grundlegendes Ereignis. Anders als bei früheren Publikationen weisen unsere Daten auch darauf hin, dass Autoimmunität gegen Anti-hnRNP-A1 unter Patienten mit schwererer Erkrankung besonders häufig ist. Weitere Studien mit einer größeren Anzahl von Patienten sind erforderlich.

Silencing of telomere-binding protein adrenocortical dysplasia (ACD) homolog enhances radiosensitivity in glioblastoma cells.

Adrenocortical dysplasia (ACD) is a shelterin protein involved in the maintenance of telomere length and in cancer radioresistance. This study investigated the expression profile of ACD in human gliomas and its role in radioresistance of glioma cells. The expression of ACD was analyzed in 62 different grades of glioma tissues and correlated with prognosis. A radioresistant cell line was generated from U87MG cells. For mechanistic studies, ACD was inhibited by small interfering RNA-targeting ACD and the effect on cell radioresistance, telomerase activity, cyclinD1, caspase-3, hTERT, and BIRC1 was evaluated. Clonogenic assay was performed after irradiation, to investigate the effect of ACD silencing on radiation sensitivity. ACD expression appeared strongly upregulated in higher grade gliomas, and its expression was significantly correlated to grading and poor prognosis. In glioma cell lines, ACD expression pattern was similar to those observed in glioma tissues. In irradiated cells, ACD expression was increased in an ionizing radiation dose-dependent manner. A higher expression of ACD was observed in the radioresistant clones than parental cells. Silencing of ACD led to the enhanced radiation sensitivity, decreased telomerase activity and cyclin D1 expression, reduced expression of BIRC1, and finally to the upregulation of caspase-3. This study represents the first report, which demonstrated the expression pattern of ACD in gliomas and its prognostic value. Our results suggested that ACD is involved in glioblastoma radioresistance, likely through the modulation of telomerase activity, proliferation, and apoptosis. ACD might represent a potential molecular biomarker and a novel therapeutic target in glioblastoma.

miRNA expression profiling regulates necroptotic cell death in hepatocellular carcinoma.

Hepatocellular carcinoma (HCC) is one of the most aggressive types of cancer and is among the leading causes of cancer-related mortality worldwide. Although the dysregulation of microRNAs (miRNAs or miRs) has often been reported in HCC, the precise molecular mechanisms by which miRNAs modulate the process of tumorigenesis and the behavior of cancer cells are not yet clearly understood. In this study, we identified a novel three­miRNA signature, including miR­371-5p, miR­373 and miR­543, that appears to orchestrate programmed cell necrosis in HCC by directly targeting the caspase­8 gene (Casp­8). Our results demonstrated that miR­371-5p, miR­373 and miR­543 were overexpressed in HCC tissues compared with paired adjacent normal tissues. The upregulation of these miRNAs specifically and markedly downregulated the expression of Casp­8, as well as significantly enhanced the Z-VAD/TNF­α-induced necroptosis of HCC cells. By contrast, the selective knockdown of miRNA expression led to a significant increase in Casp­8 levels and a marked reduction in programmed cell necrosis. Intriguingly, the sustained overexpression of Casp­8 reversed the pro­necroptotic effects exerted by miRNA mimics. Finally, a strong inverse association between the level of miR­223 and the expression levels of nucleotide-binding oligomerization domain-like receptor family, pyrin domain-containing-3 inflammasome was observed in our HCC specimens. On the whole, the present study revealed a molecular link between the three­miRNA signature, comprising miR­371-5p, miR­373 and miR­543, and the negative necroptotic regulator Casp­8, and presents evidence for its employment as a novel potential diagnostic, prognostic and therapeutic target in HCC.

Preoperatively undiagnosed papillary thyroid carcinoma in patients thyroidectomized for benign multinodular goiter.

OBJECTIVE: Incidental thyroid cancers (ITCs) are often microcarcinomas; among them, the most frequent histotype is the papillary one. The purpose of this study was to evaluate the rate of papillary thyroid cancer (PTC) in patients thyroidectomized for benign multinodular goiter. SUBJECT AND METHODS: We retrospectively evaluated the histological incidence of PTC in 207 consecutive patients who, in a 1-year period, underwent thyroidectomy for benign multinodular goiter. All patients came from an iodine-deficient area (Orleans, France) with three nuclear power stations located in the neighboring areas of the county town. RESULTS: Overall, 25 thyroids (12.1%) harbored 37 PTC, of which 31 were microcarcinomas. In these 25 PTC patients, mean age was 55 ± 10 years (range 30-75), female:male ratio 20:5 (4:1). In 10 patients (40% of 25 and 4.8% of 207), PTCs were bilateral, and in 7 (2 with microPTCs) the thyroid capsule was infiltrated. These 7 patients underwent central and lateral cervical lymph node dissections, which revealed lymph node metastases in one and two cases, respectively. Radioiodine treatment was performed in 7 cases. Neither mortality nor transient and permanent nerve injuries were observed. Four (16%) transient hypocalcaemias occurred as early complications. At last follow-up visit (mean length of follow-up 17.2 ± 3.4 months), all patients were doing well and free of any clinical local recurrence or distant metastases. CONCLUSION: With a 12% risk that multinodular goiter harbors preoperatively unsuspected PTCs, which can have already infiltrated the capsule and that can be accompanied by PTC foci contralaterally, an adequate surgical approach has to be considered.

Preoperatively undiagnosed papillary thyroid carcinoma in patients thyroidectomized for benign multinodular goiter

ABSTRACT Objective Incidental thyroid cancers (ITCs) are often microcarcinomas; among them, the most frequent histotype is the papillary one. The purpose of this study was to evaluate the rate of papillary thyroid cancer (PTC) in patients thyroidectomized for benign multinodular goiter. Subject and methods We retrospectively evaluated the histological incidence of PTC in 207 consecutive patients who, in a 1-year period, underwent thyroidectomy for benign multinodular goiter. All patients came from an iodine-deficient area (Orleans, France) with three nuclear power stations located in the neighboring areas of the county town. Results Overall, 25 thyroids (12.1%) harbored 37 PTC, of which 31 were microcarcinomas. In these 25 PTC patients, mean age was 55 ± 10 years (range 30-75), female:male ratio 20:5 (4:1). In 10 patients (40% of 25 and 4.8% of 207), PTCs were bilateral, and in 7 (2 with microPTCs) the thyroid capsule was infiltrated. These 7 patients underwent central and lateral cervical lymph node dissections, which revealed lymph node metastases in one and two cases, respectively. Radioiodine treatment was performed in 7 cases. Neither mortality nor transient and permanent nerve injuries were observed. Four (16%) transient hypocalcaemias occurred as early complications. At last follow-up visit (mean length of follow-up 17.2 ± 3.4 months), all patients were doing well and free of any clinical local recurrence or distant metastases. Conclusion With a 12% risk that multinodular goiter harbors preoperatively unsuspected PTCs, which can have already infiltrated the capsule and that can be accompanied by PTC foci contralaterally, an adequate surgical approach has to be considered.

Maxillofacial and concomitant serious injuries: An eight-year single center experience.

PURPOSE: Maxillofacial injuries are frequently associated with multiple trauma and can determine functional and aesthetic bad outcomes. The severity of maxillofacial injuries may be considerable and can divert clinicians' attention from other concomitant injuries which is less evident but potentially life-threatening. The aim of this study was to find out the concomitant injuries in patients referred to the Emergency Department (ED) of the University Hospital of Messina (North-East Sicily, Italy) for maxillofacial traumas. METHODS: We retrospectively evaluated data of 240,833 patients admitted at the ED of the University Hospital of Messina from January 2008 to December 2015 because of maxillofacial injuries leading to hospitalization and surgical treatment. Patients who primarily received treatment care at different institutions, pediatric trauma patients and adult patients who were transferred in accordance with pre-existing agreements in case of paucity of beds were excluded. Finally we included 447 (0.2%) patients over the 8 years. Data were evaluated with emphasis on epidemiology (age, gender, mechanism of trauma), primary survey and abnormalities and pattern of trauma. RESULTS: The most frequent cause of maxillofacial trauma was road accidents (319 patients, 71.4%), among which motorcycle ones were prevalent. The maxillofacial injured who presented major lesions were 98 patients and minor lesions occurred in 349 patients; 443 (99.1%) patients underwent maxillofacial surgery, immediate or delayed depending on the severity of concomitant injuries (χ2 = 557.2, p < 0.0001). Five concomitant neglected lesions were found to be associated with severe maxillofacial traumas (χ2 = 17.13, p < 0.0001 vs minor lesions). All of the neglected lesions occurred in paucisymptomatic patients who showed painless abdomen, no hemodynamic instability, no signs of hematoma of anterior and posterior abdominal wall or other suspicious clinical signs and symptoms. CONCLUSION: Among the patients admitted firstly in other surgical wards different from the Maxillofacial Surgery Unit, diagnosis was more difficult, especially for blunt abdominal traumas, in which patients showed only vague and nonspecific symptoms concealing serious and life-threatening injuries. We recommend the routine use of whole body CT scan, when the maxillofacial injuries appear prevalent, mainly in patients affected by maxillofacial major lesions.