Publications by authors named "Silvia Colombo"

Background: Canine leishmaniosis (CanL) due to Leishmania infantum remains common, and veterinarians do not always follow scientifically sound approaches for diagnosis, treatment and prevention.

Objectives: To provide consensus guidelines for diagnosis and evidence-based guidelines for treatment and prevention of CanL.

Methods And Material: Clinical consensus guidelines for the diagnosis were structured based on literature and authors' experience.

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Background: Dermoscopy is a noninvasive technique used for the preliminary assessment of skin lesions including neoplasms in humans and animals. Infundibular keratinising acanthoma (IKA) is a benign hair follicle neoplasm of dogs reported to represent 3.36% of all skin tumours; however, its dermoscopic features have not been investigated.

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The authors describe a case of presumptive feline subcutaneous fat sclerosis, a condition reported only once previously (in 1987) and diagnosed with postmortem examination. We describe radiographic, computed tomography scan and histopathological findings, and partial response to oral methylprednisolone and Vitamin E.

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Article Synopsis
  • The study evaluated different models/scores to identify hemodynamically stable patients with acute pulmonary embolism (PE) who are at risk of death or clinical deterioration.
  • Among the 5036 patients analyzed, most models had positive predictive values below 10%, but negative predictive values were over 98% for most, indicating they are good at ruling out the risk.
  • TELOS and NEWS2 showed the best performance for predicting in-hospital death and deterioration, while TELOS stood out with the highest accuracy for identifying at-risk patients.
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Introduction: Mutations in the BRAF gene (BRAFmut) are associated with an unfavorable prognosis in patients with metastatic colorectal cancer (CRC). The aim of this meta-analysis was to evaluate the prognosis of colorectal cancer (CRC) patients with liver metastases and the potential benefits of liver resection in patients with BRAFmut CRC.

Material And Methods: A systematic search of PubMed, Cochrane Central Controlled Trials, and Embase databases was conducted on May 31, 2023.

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Avian nests are fundamental structures in avian reproduction and face strong selective forces. Climatic conditions are likely to have shaped the evolution of specific nest traits, but evidence is scarce at a macroevolutionary level. The Thraupidae family (commonly known as tanagers) is an ideal clade to understand the link between nest architecture and climate because it presents wide variation in nest traits.

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  • Dermoscopy is an effective non-invasive method for examining sebaceous lesions in dogs, similar to its usage in humans, highlighting a need for further investigation in this area.
  • The study focused on describing the dermoscopic features of different types of sebaceous lesions in dogs and evaluated how consistently different veterinary experts could identify these features.
  • Results showed that most lesions displayed distinct white-yellowish structures and the study found good agreement among observers for several dermoscopic parameters, indicating that dermoscopy can be a valuable tool in veterinary dermatology.
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The aim of this study was to exploit detailed analyses of GPS-recorded tracks to better characterise the impact of hippocampal (HF) lesion on spatial memory and perception in the context of homing pigeon navigation when reliant on familiar landscape features near the home loft following repeated releases from the same three locations. As reported previously, following HF lesion, a low spatio-temporal resolution analysis revealed that homing pigeons fly less direct paths home once near the loft. We now further show that 1) HF-lesioned pigeons are less likely to display fidelity to a particular flight path home when released from the same locations multiple times, 2) intact pigeons are more likely to exploit leading-line landscape features, e.

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Background: Assessment of the severity of pruritus is difficult in cats, because they manifest discomfort by increased licking, increased scratching or both.

Hypothesis/objectives: Our objective was to develop and validate a feline-specific pruritus scale (VAScat).

Methods: The scale was designed as a double Visual Analog Scale (VAS), one VAS for licking and one for scratching, with severity and behavioural descriptors.

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Some multimodal signals-that is, occurring in more than one sensory modality-appear to carry additional information which is not present when component signals are presented separately. To understand the function of male ring dove's (Streptopelia risoria) multimodal courtship, we used audiovisual playback of male displays to investigate female response to stimuli differing in their audiovisual timing. From natural courtship recordings, we created a shifted stimulus where audio was shifted relative to video by a fixed value and a jittered stimulus, where each call was moved randomly along the visual channel.

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Background And Aims: Hepatic steatosis of nonalcoholic etiology (nonalcoholic fatty liver disease; NAFLD) is an emergent condition that may lead to hepatic cirrhosis and finally to liver cancer. We evaluate the risk of developing hepatocellular carcinoma (HCC) and quantify the prognosis in terms of recurrence (DFS) as well as HCC-specific and overall survival (CSS and OS) of patients with and without NAFLD.

Methods: We searched published articles that evaluated the risk and outcomes of HCC in patients with steatosis/steatohepatitis from inception to July 2021 were identified by searching the PubMed, EMBASE, and Cochrane Library databases.

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Article Synopsis
  • The study examines the prevalence of specific bacteria in nearly 10,000 ready-to-eat food samples from northern Italy, collected over two years from large retailers and canteens.
  • Samples were divided into two groups: Group A included fully cooked foods ready for immediate consumption, while Group B included a mix of cooked and uncooked items or raw ingredients.
  • Overall prevalence rates for the bacteria were low, at 0.13% for one type and 0.07% for another, providing insights for risk analysis in the safety of ready-to-eat foods.
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Background: Ear tip ulcerative dermatitis (ETUD) is an uncommon clinical reaction pattern in canine dermatology. The lesions are suggestive of vascular damage which may be caused by inflammatory or noninflammatory diseases, and often are idiopathic. Therapeutic options for ETUD include topical glucocorticoids or tacrolimus, pentoxifylline, vitamin E, doxycycline, tetracycline and niacinamide, sulfonamides, glucocorticoids, ciclosporin and surgical correction.

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The avian hippocampal formation (HF) is homologous to the mammalian hippocampus and plays a central role in the control of spatial cognition. In homing pigeons, HF supports navigation by familiar landmarks and landscape features. However, what has remained relatively unexplored is the importance of HF for the retention of previously acquired spatial information.

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Introduction: The WHO declared 2019 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) a public health emergency of international concern. The National and Regional Health System has been reorganized, and many oncological patients died during this period or had to interrupt their therapies. This study summarizes a single-centre experience, during the COVID-19 period in Italy, in the treatment of brain metastases with Gamma Knife stereotactic radiosurgery (GKRS).

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  • Treatment of genotype-3 HCV is challenging, and a study aimed to compare real-life outcomes of three antiviral regimens: SOF+DAC, SOF/VEL, and GLE/PIB.
  • The study analyzed 2082 patients, finding that overall response rates after 12 weeks were similar across treatments, with SOF/VEL showing better outcomes only when ribavirin was not included in the regimen.
  • The findings suggest that there is a shift towards newer, ribavirin-free treatments which could potentially simplify the management of this difficult-to-treat HCV genotype without compromising success rates.
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Background: Sofosbuvir (SOF)-based regimens have been associated with renal function worsening in HCV patients with estimated glomerular filtration rate (eGFR) ≤ 45 ml/min, but further investigations are lacking.

Aim: To assess renal safety in a large cohort of DAA-treated HCV patients with any chronic kidney disease (CKD).

Methods: All HCV patients treated with DAA in Lombardy (December 2014-November 2017) with available kidney function tests during and off-treatment were included.

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Background: Peripheral neuroblastic tumours arising from primitive cells of the cranial and spinal ganglia and from sympathetic ganglion cells of the autonomic nervous system include, from most to least differentiated, ganglioneuroma, ganglioneuroblastoma and neuroblastoma. Canine ganglioneuroblastoma has been described in the mediastinum, nasal and oral cavities, as well as in the brain.

Objective: To describe the clinical and histopathological findings, treatment and follow-up of a primary cutaneous ganglioneuroblastoma affecting the footpad of a dog.

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A two-year-old, intact female Scottish Terrier presented with one-and-a-half-year history of erosive and ulcerative lesions affecting the nasal planum. Clinical appearance, history, histopathology, and response to therapy were suggestive of a rare vasculopathy of the nasal planum that has been previously described in Scottish Terrier dogs. In previously published reports, medical treatments of the disease had failed, leading to euthanasia of five dogs, while a short-term follow-up was available for one case that was controlled with prednisolone and ciclosporin.

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Unlabelled: Practical relevance: Ciclosporin (CsA) is a systemic immuno-modulatory drug widely used to treat immune-mediated diseases in humans and veterinary species. CsA was registered for use in cats in the USA and Europe in 2011, and is indicated for the treatment of chronic allergic dermatitis at a recommended daily dose of 7 mg/kg PO.

Audience: This review will be of interest to all veterinarians working with cats, given the wide range of potential applications of CsA and its safety profile.

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Case Summary: A 5-year-old, spayed female, indoor-only domestic shorthair cat was referred with an acute history of multifocal cutaneous and mucocutaneous erosive-ulcerative lesions and skin detachment. The lesions occurred on the seventh day of therapy with cefadroxil. Erosive-ulcerative and occasionally crusted lesions were apparent on the medial and lateral canthus of both eyes, ventral neck, abdomen, perivulvar region, periungual skin and medial aspect of the front and hindlimbs.

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Malignancies have been reported in patients with rheumatoid arthritis, psoriatic arthritis and ankylosing spondylitis, treated with anti-tumour necrosis factor (anti-TNF) agents. Areas covered: We conducted a systematic review of randomized controlled trials (RCTs) to determine the effect of anti-TNF agents on the occurrence of cancer (any type). Literature databases were searched up to May 2014 to identify relevant studies that evaluated adalimumab, certolizumab, etanercept, golimumab, or infliximab, compared with placebo or no treatment.

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Brazilian spotted fever (BSF) is caused by the bacterium Rickettsia rickettsii. Because of its high case-fatality rate and apparent increase in areas of transmission, it is considered to be the rickettsial illness of primary public health interest. Cases of this disease have historically occurred in Southeastern Brazil.

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Introduction: Brazilian spotted fever is an infectious disease with a high mortality rate if not treated early. Differential diagnosis is difficult, as the first clinical signs are non-specific and can be confused with other diseases. The aim of the study was to investigate evidence of infection with Rickettsia rickettsii and Rickettsia parkeri in negative sera samples, collected in 2014, from patients with suspected leptospirosis, dengue fever, and meningococcal disease in Atibaia and Bragança Paulista municipalities of the State of São Paulo.

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Sepsis is a rapidly evolving disease with a high mortality rate. The early identification of sepsis and the implementation of early evidence-based therapies have been recognized to improve outcome and decrease sepsis-related mortality. The aim of this study was to compare the accuracy of the standard diagnostic work-up of septic patients with an integrated approach using early point of care ultrasound (POCUS) to identify the source of infection and to speed up the time to diagnosis.

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