Publications by authors named "Leonardo Gomes Fonseca"

Introduction And Objectives: With the advent of new therapeutic options for patients with hepatocellular carcinoma (HCC) for intermediate or advanced stages of the Barcelona Clinic Liver Cancer (BCLC), regional real-world data regarding prognostic survival factors are of significant importance.

Patients And Methods: A multicenter prospective cohort study was conducted in Latin America including BCLC B or C patients since 15 May 2018. We report here the second interim analysis focusing on prognostic variables and causes of treatment discontinuation.

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The management of hepatocellular carcinoma (HCC) is challenging because most patients have underlying cirrhosis, and the treatment provides, historically, a limited impact on the natural history of patients with advanced-stage disease. Additionally, recurrence rates are high for those patients who receive local and locoregional modalities, such as surgical (resection and transplantation) or image-guided (ablation and intra-arterial) therapies. Translational research has led to new concepts that are reshaping the current clinical practice.

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Although hepatocellular carcinoma is considered a highly lethal malignancy, recent therapeutic advances have been achieved during the last 10 years. This scenario resulted in an unprecedented improvement in survival for patients with advanced hepatocellular carcinoma, almost reaching 20-26 mo of overall survival after first-second line sequential treatment. The advent of the combination of atezolizumab with bevacizumab showed, for the first time, superiority over sorafenib with improvement in overall survival.

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Background And Aims: Hepatic epithelioid hemangioendothelioma is an ultra-rare hepatic vascular tumor, diagnosed more frequently in females. The knowledge about this tumor derives mainly from small case series with sub-optimal treatment outcomes. The aim of this study is to identify the clinical and radiological issues helpful to develop an international prospective registry.

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Article Synopsis
  • Over 38,000 cases of hepatocellular carcinoma (HCC) occur annually in Latin America, with many patients diagnosed late due to sociocultural and economic barriers.
  • The primary cause of HCC in the region is viral hepatitis, but there's a growing concern over fatty liver disease, similar to trends observed in Western countries.
  • Key challenges include increasing screening coverage, improving healthcare access, and providing ongoing medical training to better manage and prevent HCC.
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Background: Regorafenib is a multikinase inhibitor with antiangiogenic effects that improves overall survival (OS) in metastatic colorectal cancer (mCRC) after failure of standard therapies. We investigated the efficacy and safety of regorafenib in antiangiogenic therapy-naïve chemotherapy-refractory advanced colorectal cancer.

Patients And Methods: This single-center, single-arm, phase IIb study (NCT02465502) enrolled adults with mCRC whose disease had progressed on, or who were intolerant to, standard therapy, but who were antiangiogenic therapy-naïve.

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Background: Before the targeted therapies era, cytotoxic chemotherapy (CCT) was an option for advanced hepatocellular carcinoma (HCC), even with the lack of supporting evidence. Since the last decade, sorafenib has been established as the first-line therapy. Although new agents are being incorporated, CCT is still considered in regions where new drugs are not available or for patients who progressed through the approved therapies and remain in good clinical condition.

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The design of prospective trials in hepatocellular carcinoma is a true challenge because the underlying condition of the liver, upon drug exposure, could interact with the specific course of carcinoma and influence overall outcome. The information generated by basic and clinical researchers provides the rationale for improving the prognosis of this complex disease. However, an additional challenge is interpreting emerging data in real time in order to integrate them into the design of further trials.

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Acquired hemophilia A (AHA) is a rare disorder that results from the presence of autoantibodies against the clotting factor VIII (FVIII) causing hemorrhagic disorders. This entity is mostly associated with autoimmune diseases, pregnancy, the postpartum period, drugs and malignancy. Among the solid cancers, prostate neoplasm is the most common cause of AHA.

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Sorafenib demonstrated a survival benefit in the treatment of advanced hepatocellular carcinoma (HCC) in phase III trials. However, almost all the patients included in those trials exhibited well-preserved liver function (Child-Pugh A). The aim of this study was to describe our experience with sorafenib in Child-Pugh B HCC patients.

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We evaluated the efficacy and safety of metronomic oral cyclophosphamide (CTX) and prednisone in metastatic castration-resistant prostate cancer (mCRPC) patients. We analyzed retrospectively patients with mCRPC previously treated with docetaxel, and who received metronomic CTX (from 50 mg PO daily to 150 mg PO, 14 days/7 days off) and prednisone 10 mg PO daily between September 2009 and April 2014 were analyzed. The primary endpoint was prostate-specific antigen (PSA) decrease ≥50 %.

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Background: Trastuzumab improves the survival of patients with human epidermal growth factor receptor 2 (HER2)-positive breast cancer (BC). The incidence and long-term impact of trastuzumab-related cardiotoxicity in the community setting is of great clinical importance.

Material And Methods: Patients with HER2-positive BC treated with (neo)adjuvant trastuzumab were retrospectively evaluated.

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Sorafenib is the first systemic therapy to demonstrate survival benefit in advanced hepatocellular carcinoma (HCC) in randomized controlled trials with rigorous patient selection. Neutrophil-to-lymphocyte ratio (NLR) has been shown to be associated with poor survival in various solid tumors. Our aim is to evaluate the prognostic role of NLR in HCC patients treated with sorafenib.

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Cardiac angiosarcoma is a rare entity. The incidence through autopsy findings ranges between 0.001% and 0.

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Müllerian adenosarcoma is a rare, mixed tumor that can occur throughout the female genital tract, but is most commonly found in the uterus. Ovarian adenosarcoma is rarer and has a poorer prognosis than uterine adenosarcoma. Data on the clinicopathological features of ovarian adenosarcoma are limited, and, due to its rarity, the management is controversial.

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A 55-year old man was treated with sunitinib 50 mg/day for 4 weeks on and 2 weeks off, as a first-line therapy for metastatic renal cell carcinoma. During the fourth week of the first cycle, he was admitted to the Emergency Department with abdominal pain and vomiting. Acute acalculous cholecystitis was diagnosed.

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Mesothelioma of the tunica vaginalis testis (MTVT) is a rare tumor that usually affects patients after the sixth decade of life. Exposure to asbestos is a known risk factor. Enlargement of the scrotal volume is the most common initial clinical manifestation, and about 15% of cases present metastasis at diagnosis.

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Anaplastic large cell lymphoma (ALCL), a well-recognized entity, presents a varied clinical picture and epidemiological characteristics associated with the expression of the anaplastic lymphoma kinase (ALK) protein. When classic symptoms are present (weight loss, fever, and night sweats) and combine with enlarged and easily accessible peripheral lymph nodes, diagnosis is not that difficult. But when the clinical presentation is nonspecific, a tough diagnostic task is required.

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Plasmocytoid variant urothelial carcinoma (PVUC) of the urinary bladder is a rare histological variant of transitional cell carcinoma. Data regarding PVUC shows that this neoplasia presents a distinctive clinical outcome represented by aggressive behavior and poor survival rate. The authors report a case of a 57-year-old male patient with a 3-month history of hematuria and pelvic pain.

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Article Synopsis
  • Fibrosarcoma is a rare type of soft tissue cancer originating from fibrous connective tissue, primarily affecting individuals in their 40s and 50s, with various subtypes like low-grade fibromyxoid sarcoma and sclerosing epithelioid fibrosarcoma.
  • A case study of a 53-year-old patient revealed a tumor initially misdiagnosed as a solitary fibrous tumor, but later identified as a hybrid of low-grade fibromyxoid and sclerosing epithelioid fibrosarcoma after recurrent lesions and metastases.
  • The authors emphasize the challenges in diagnosing soft tissue tumors, stressing the need for extensive immunohistochemical testing to ensure accurate final diagnoses, particularly when clinical
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Uterine sarcomas are an uncommon and heterogeneous group of tumors that account for 3-7% of the malignant neoplasms of the uterus and approximately 1% of all malignant tumors of the female genital system. The main clinical manifestations are abnormal uterine bleeding in pre- or postmenopausal women. Pelvic pain, abdominal distension, urinary urgency, and profuse and fetid leukorrhea are other frequent complaints.

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