Publications by authors named "Gilligan Gerardo"

Article Synopsis
  • Granular Cell Tumor (GCT) is a rare benign oral lesion, often misdiagnosed due to its similarity to other conditions, highlighting the need for more awareness on its prevalence and characteristics.
  • A study at six diagnostic centers in Brazil and Argentina analyzed 61 GCT cases, predominantly in females (73.8%), with most tumors on the tongue, presenting as painless nodules or papules in various colors and sizes.
  • Histopathological analysis revealed distinctive cell characteristics, with low agreement between clinical and histological diagnoses, but no local recurrences were noted during the follow-up period.
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Background: Uremic stomatitis is often unfamiliar to healthcare professionals. This study presents five cases of uremic stomatitis, providing a comprehensive analysis of their demographic distribution, clinicopathological features, and management strategies based on existing literature.

Methods: Data were collected from centers across Brazil, Argentina, Venezuela, and Mexico.

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Phleboliths are reported as calcifications that occur in vascular malformations, associated with changes in blood flow dynamics, thrombus formation and subsequent calcifications. Radiological examination, such as cone beam computed tomography (CBCT) could help in demonstrating the presence of a calcifiied mass. A 45-year-old male was referred to our service with an asymptomatic nodular purplish lesion located on the ventrolateral tongue.

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Objective: Previous isolated reports have hypothesized that chewing coca leaves, a pre-Columbian tradition found in certain regions of South America, may be associated with the development of oral squamous cell carcinoma (OSCC). Coca chewing (CC) is a habit that shares many characteristics with the well-known practice of betel chewing observed in Asia. The aim of this study is to analyze the association between CC and OSCC among patients who attended the Señor del Milagro Hospital in Salta, Argentina.

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Article Synopsis
  • - The study examines oral lesions in systemic lupus erythematosus (SLE) patients from Latin America, highlighting their varied characteristics and challenges in diagnosis, especially when lesions appear alone.
  • - In a sample of 70 SLE patients, the majority were white females with an average age of 38.4 years, and the most common oral lesions were ulcers, erosions, and white lesions, often found in the hard/soft palate.
  • - Findings suggest that unusual oral changes may signal underlying systemic issues, emphasizing the need for a multidisciplinary approach and regular oral exams to identify and treat these lesions effectively.
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Objective: To analyze the frequency of sequential oral squamous cell carcinomas (s-OSCC), preceded by oral potentially malignant disorders, and OSCC de novo (OSCC-dn) and explore differences in their clinicopathologic presentations.

Study Design: A structured electronic search strategy identified studies that analyzed frequency, clinical, biological, demographic, biomarkers, and prognostic features of s-OSCC and OSCC-dn according to PRISMA guidelines in PubMed, Scopus, Cochrane Library, and Google Scholar, up to January 31, 2023. Inclusion criteria were original English, Spanish, Portuguese, French, Italian, and German cross-sectional, cohort, and case-control studies.

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Background: Calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia (CREST) syndrome is an acronym for the clinical features that are seen. Its etiology is unknown, affecting women three times more than men. CREST syndrome is often diagnosed by systemic symptoms.

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Objective: This study aimed to explore perceived barriers to early diagnosis and management of oral cancer, as well as potential pathways for improvement in Latin America and the Caribbean (LAC).

Methods: This cross-sectional study used a self-administered online questionnaire created via the Research Electronic Data Capture platform. The survey was distributed to health professionals trained in Oral Medicine, Oral Pathology, Oral and Maxillofacial Surgery, and Dentists with clinical and academic expertise in oral potentially malignant disorder (OPMD) and oral cancer.

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Article Synopsis
  • The study aimed to investigate the frequency of oral squamous cell carcinoma (OSCC) in relation to oral potentially malignant disorders (OPMD) and understand the epidemiological profile in Latin America.
  • A total of 2705 OSCC cases were analyzed, revealing a mean age of 62.8 years, with a higher prevalence among men, smokers, and drinkers, and the lateral tongue being the most affected area.
  • The findings indicate that most cases were OSCC-de novo (81.4%), highlighting regional variations in OPMD, with leukoplakia being the most common, and suggest the need for additional studies to further explore this phenomenon.
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Objective: Plasma cell mucositis (PCM) is a non-neoplastic plasma cell disorder of the upper aerodigestive tract with a high impact on life quality. Less than 70 cases were reported in the literature. The objective of this study was to report 2 cases of PCM.

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Introduction: Drug-associated Maxillary Osteonecrosis is one of the most relevant adverse effects in treatment with antiresorptive drugs such as bisphosphonates and denosumab. Oncological conditions such as multiple myeloma, breast cancer, prostate, and bone-metabolic disorders such as osteoporosis lead the indications for these antiresorptive therapies. Treatment is complex because the disease is often refractory.

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Background: A proportion of oral squamous cell carcinoma (OSCC) is preceded by oral potentially malignant disorders (OPMD), and the rest might not be associated with any well-established OPMD. Chronic traumatic ulcer (CTU) has been suggested as a lesion with potential for malignant transformation, but the evidence is inconclusive.

Objective: The aim of this study was to describe clinicopathological features of non-healing CTU (NHCTU) that later developed to OSCC.

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Objectives: Oral squamous cell carcinoma (OSCC) is a multifactorial disease. The individual effect of each risk factor for OSCC may be conditioned by the frequency of other factors. The objective of this study was to identify the association between chronic mechanical irritation (CMI) and OSCC and to analyse the influence of CMI on other important risk factors for OSCC.

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Chewing coca leaves is a habit still practiced in Bolivia, Peru and Argentina. There is scarce evidence in the relationship between this habit and development of oral squamous cell carcinoma (OSCC), some authors have found oral epithelial changes in coca chewers. This study aimed to present a case series of patients with a coca chewing habit that developed OSCC, in the absence of risk factors for oral cancer.

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Background: Syphilis is the oldest sexually transmitted infectious disease in humanity. In the last decades, it was noted the re-emergence of the disease, and actually it remains an important public health problem. Oral mucosa could be affected by the infection.

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Objective: To report the clinicopathologic features of acquired oral syphilis cases in South American countries.

Materials And Methods: Clinical data were retrospectively collected from the records of 18 oral diagnostic services in Argentina, Brazil, Chile, Colombia, Venezuela, Uruguay, and Peru. Serologies of nontreponemal and treponemal tests were used for diagnosis.

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Article Synopsis
  • Oral squamous cell carcinomas (OSCC) are linked to chronic tobacco use, with both smoking and smokeless forms being well-studied for their cancer-causing potential.
  • A clinical case of OSCC was presented, revealing the impact of using both chewing tobacco and creamy snuff, highlighting the urgency to understand mixed tobacco use habits.
  • With the rise of new tobacco products like dentifrices and nicotine pouches, healthcare providers need to inform patients about their potential health risks.
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Introduction: Medication-related osteonecrosis of the jaw is a frequent collateral effect found in patients under antiresorptive treatments. Malignancies such as multiple myeloma, breast and prostate cancer as well as bone-metabolic disorders such as osteoporosis, lead the indications for these antiresorptive therapies. Even with a low frequency, myelodysplastic syndromes are also entities that have previously been associated with the development of jaw osteonecrosis.

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Introduction: Human Papilloma Virus could infect human epithelia, including cervical and oral keratynocites, leading to the development of dysplastic or malignant changes. Regarding the oral mucosa, leukoplakia is the most potentially malignant disorder associated with Papilloma Virus coinfection.

Objective: the aim of this report is to present a case of a young woman with a previous history of a high-risk cervical lesion associated with Human Papillomavirus and an oral leukoplakia associated with the same viral infection using immunohistochemical techniques.

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Several clinical and histological features, usually associated with chronic inflammation could complexify the diagnosis of oral epithelial dysplasia (OED). These changes in response to inflammatory stimuli, or re-epithelialization events, are described as reactive epithelial atypia or dysplasia (REA/D). Within a REA/D scenario (for example in the edges of chronic traumatic ulcers), the diagnosis of OED could be challenging for oral pathologists due to an unfeasibility to accurate the true nature of that changes.

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Background: Multiple white plaques of the oral mucosa are usually associated with potentially malignant disorders such as oral lichen planus, oral lichenoid lesions and proliferative verrucous leukoplakia. Previous studies in the current literature describe a potential clinical overlap in these entities. The aim of this study is to review clinicopathological and evolutive features of these Oral Potentially Malignant Disorders highlighting the dynamic changes of diagnoses.

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