Vertebral Hemangiomas: Yucesoy-Yilmaz Classification System with Corresponding Therapeutic Options.

OBJECTIVE: Vertebral hemangiomas (VHs) are relatively common, symptomatic benign tumors of the spine with a reported estimated incidence up to 11%. They usually appear in the body of the vertebrae; however, they can extend into pedicles, laminae, and epidural space. They may cause pain, neurologic deficits. and fractures. METHODS: In this retrospective, single-center study, we reviewed our cases with VH and we propose the novel classification system that evaluates these lesions per their views on magnetic resonance imaging and clinical findings under 4 main categories. RESULTS: Our novel classification system proposes that grade I lesions occupy less than 50% of the vertebral body, whereas grade II lesions occupy more than 50% and grade III lesions occupy the whole corpus. Grade IV lesions show an epidural and pedicular extension. We propose that grade I lesions may not be worthwhile for follow-up, whereas asymptomatic grade II (a) lesions to be worthy for a biannual imaging and symptomatic thoracolumbar grade II (b) and thoracolumbar grade III lesions to be considered for percutaneous vertebroplasty. We imply that decompression, posterior spinal instrumentation, and open vertebroplasty may be performed for thoracolumbar grade IV lesions. We further consider cervical grade IIb, III, and grade IV lesions as operable because of the disadvantages of percutaneous vertebroplasty. CONCLUSIONS: We suggest that our novel classification system may be useful for the determination of diagnostic and therapeutic procedures in the management of VH. Further multicentric trials on larger series are warranted to validate this system and popularize its utility in larger populations.

Historical and Contemporary Management of Infantile Hepatic Hemangioma: A 30-year Single-center Experience.

OBJECTIVE: To describe outcome of infants with hemangioma(s) of the liver. SUMMARY OF BACKGROUND DATA: Infantile hepatic hemangiomas exhibit a diverse phenotype. We report our 30-year experience and describe optimal management based on precise radiological classification. METHODS: Retrospective review of 124 infants (66 female) 1986-2016. Categorical analysis with Chi2 and nonparametric comparison. Data expressed as median (range) and P < 0.05 considered significant. RESULTS: Lesions classified as focal (n = 70, 56%); multifocal (n = 47, 38%) or diffuse (n = 7, 6%) and of these 80(65%) were symptomatic (eg, cardiac failure n = 39, 31%; thrombocytopenia n = 12, 10%).Increased hepatic artery velocity was seen in 63 (56%). Median hepatic artery velocity was greatest in diffuse lesions [245 (175-376) cm/s vs focal 120 (34-242) cm/s vs multifocal 93 (36-313) cm/s; P = 0.0001]. Expectant management alone was followed in 55 (44%). Medical therapy was utilised in 57(46%) and sufficient for symptom control in 29/57 (51%). Propranolol therapy (from 2008) was sufficient for symptom control in 22/28 (79%). Surgery (hepatic artery ligation n = 26; resection n = 13; embolization n = 1) was required in 40 (32%). Median maximal lesion diameter was 3 (0.5-17.1) cm and greater in those requiring surgery (7 cm vs 4.9 cm; P = 0.04). The proportion requiring surgery decreased markedly in the propranolol era [pre-propranolol 25/48 (52%) vs post-propranolol 16/76 (21%) (P = 0.0003)]. Systematic follow-up with ultrasound to a median of 2.6 (0.02-16) years. CONCLUSIONS: A proportion of infantile hepatic hemangiomas remain asymptomatic permitting observation until resolution but the majority require complex multi-modal therapy. First-line pharmacotherapy with propranolol has reduced but not abolished the need for surgery.

The Infantile Hemangioma Referral Score: A Validated Tool for Physicians.

OBJECTIVES: Infantile hemangiomas (IHs) are common; some cases require timely referral and treatment to prevent complications. We developed and validated a reliable instrument for timely and adequate referral of patients with IH to experts by nonexpert primary physicians. METHODS: In this multicenter, cross-sectional, observational study, we used a 3-stage process: (1) development of the Infantile Hemangioma Referral Score (IHReS) tool by IH experts who selected a representative set of 42 IH cases comprising images and a short clinical history, (2) definition of the gold standard for the 42 cases by a second independent committee of IH experts, and (3) IHReS validation by nonexpert primary physicians using the 42 gold standard cases. RESULTS: A total of 60 primary physicians from 7 different countries evaluated the 42 gold standard cases (without reference to the IHReS tool); 45 primary physicians evaluated these cases using the IHReS questionnaire, and 44 completed retesting using the instrument. IHReS had a sensitivity of 96.9% (95% confidence interval 96.1%-97.8%) and a specificity of 55.0% (95% confidence interval 51.0%-59.0%). The positive predictive value and negative predictive value were 40.5% and 98.3%, respectively. Validation by experts and primary physicians revealed substantial agreement for interrater reliability and intrarater repeatability. CONCLUSIONS: IHReS, a 2-part algorithm with a total of 12 questions, is an easy-to-use tool for primary physicians for the purpose of facilitating correct and timely referral of patients with IH. IHReS may help practitioners in their decision to refer patients to expert centers.

Hemangiomas orbitarios bilaterales: a propósito de un caso / Bilateral orbital hemangiomas: a case report

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Hepatic tumor classification using texture and topology analysis of non-contrast-enhanced three-dimensional T1-weighted MR images with a radiomics approach.

The purpose of this study is to evaluate the accuracy for classification of hepatic tumors by characterization of T1-weighted magnetic resonance (MR) images using two radiomics approaches with machine learning models: texture analysis and topological data analysis using persistent homology. This study assessed non-contrast-enhanced fat-suppressed three-dimensional (3D) T1-weighted images of 150 hepatic tumors. The lesions included 50 hepatocellular carcinomas (HCCs), 50 metastatic tumors (MTs), and 50 hepatic hemangiomas (HHs) found respectively in 37, 23, and 33 patients. For classification, texture features were calculated, and also persistence images of three types (degree 0, degree 1 and degree 2) were obtained for each lesion from the 3D MR imaging data. We used three classification models. In the classification of HCC and MT (resp. HCC and HH, HH and MT), we obtained accuracy of 92% (resp. 90%, 73%) by texture analysis, and the highest accuracy of 85% (resp. 84%, 74%) when degree 1 (resp. degree 1, degree 2) persistence images were used. Our methods using texture analysis or topological data analysis allow for classification of the three hepatic tumors with considerable accuracy, and thus might be useful when applied for computer-aided diagnosis with MR images.

Radiomics-based classification of hepatocellular carcinoma and hepatic haemangioma on precontrast magnetic resonance images.

BACKGROUND: To evaluate the feasibility of using radiomics with precontrast magnetic resonance imaging for classifying hepatocellular carcinoma (HCC) and hepatic haemangioma (HH). METHODS: This study enrolled 369 consecutive patients with 446 lesions (a total of 222 HCCs and 224 HHs). A training set was constituted by randomly selecting 80% of the samples and the remaining samples were used to test. On magnetic resonance (MR) images of HCC and HH obtained with in-phase, out-phase, T2-weighted imaging (T2WI), and diffusion-weighted imaging (DWI) sequences, we outlined the target lesions and extracted 1029 radiomics features, which were classified as first-, second-, higher-order statistics and shape features. Then, the variance threshold, select k best, and least absolute shrinkage and selection operator algorithms were explored for dimensionality reduction of the features. We used four classifiers (decision tree, random forest, K nearest neighbours, and logistic regression) to identify HCC and HH on the basis of radiomics features. Two abdominal radiologists also performed the conventional qualitative analysis for classification of HCC and HH. Diagnostic performances of radiomics and radiologists were evaluated by receiver operating characteristic (ROC) analysis. RESULTS: Valuable radiomics features for building a radiomics signature were extracted from in-phase (n = 22), out-phase (n = 24), T2WI (n = 34) and DWI (n = 24) sequences. In comparison, the logistic regression classifier showed better predictive ability by combining four sequences. In the training set, the area under the ROC curve (AUC) was 0.86 (sensitivity: 0.76; specificity: 0.78), and in the testing set, the AUC was 0.89 (sensitivity: 0.822; specificity: 0.714). The diagnostic performance for the optimal radiomics-based combined model was significantly higher than that for the less experienced radiologist (2-years experience) (AUC = 0.702, p < 0.05), and had no statistic difference with the experienced radiologist (10-years experience) (AUC = 0.908, p>0.05). CONCLUSIONS: We developed and validated a radiomics signature as an adjunct tool to distinguish HCC and HH by combining in-phase, out-phase, T2W, and DW MR images, which outperformed the less experienced radiologist (2-years experience), and was nearly equal to the experienced radiologist (10-years experience).

Practical Applications in Immunohistochemistry: An Immunophenotypic Approach to the Spleen.

CONTEXT.­: Even though immunohistochemistry is routinely used by pathologists, evaluation of immunohistochemistry in splenic lesions remains difficult for many. Classification of benign and splenic lesions often requires a combination of hematoxylin-eosin evaluation, immunophenotyping, and sometimes molecular testing. Immunohistochemical staining is essential in evaluating many splenic lesions, and requires an understanding of the normal compartments of the spleen. OBJECTIVE.­: To address different immunohistochemical features used for identification and subclassification of different lesions of the spleen, as well as in the normal compartments of the spleen. DATA SOURCES.­: The information outlined in this review article is based on our experiences with a variety of spleen cases, on the current World Health Organization classification of hematopoietic and lymphoid tumors, and on a review of English-language articles published during 2018. CONCLUSIONS.­: Features for phenotyping normal spleen as well as a variety of splenic lesions, including littoral cell angioma and splenic marginal zone lymphoma, are discussed. Suggested immunopanels are provided to assist in the diagnosis of different lesions of the spleen.

Classification and ultrasound findings of vascular anomalies in pediatric age: the essential.

Proper nomenclature is a major obstacle in understanding and managing vascular anomalies. Often the same term is used for totally different types of lesions or, conversely, the same lesion may be labeled with different terms. Although in recent times there has been a greater understanding of the problems concerning vascular anomalies, episodes of improper use of terminology still remain. The aim of this article, starting from the most recent classification of vascular anomalies, is to provide a clinical and instrumental approach to identifying these lesions and to converge towards a clear and unambiguous terminology that must become univocal among the various operators to avoid diagnostic misunderstandings and therapeutic errors.

Proposed Classification System for Retinal Capillary Angiomatosis.

Retinal angiomas are rare tumors that develop within the vascular bed of the retina. Their occurrence may be sporadic or as part of the multisystem disorder called von Hippel-Lindau disease. It is well established in literature that retinal angiomas have a natural history of evolving as small aneurysmal dilatations and progressing to vision-threatening retinal detachments. Several approaches to the management of these angiomas have been reported in the literature, but it is difficult to decipher which modality is best suited for which type of angioma. A classification of retinal angiomas is proposed herein. A classification system may help in developing future guidelines for the study, screening, treatment, and prognostication of patients with retinal angiomas.

Lesões vasculares orais: avaliações clínicas, diagnósticas e terapêuticas / Lesiones vasculares bucales: evaluaciones clínicas, diagnósticas y terapéuticas / Oral vascular lesions: clinical, diagnostic and therapeutic evaluations

Introdução: As patologias vasculares acometem com alta incidência as regiões de cabeça e pescoço. Quando essas acometem a região oral, nota-se predileção por lábios, língua e comissura bucal, com predominância no sexo feminino. Objetivo: Analisar sobre as lesões vasculares orais, enfatizando as características clínicas, métodos de diagnósticos e abordagem terapêutica. Métodos: Trata-se de uma revisão literária, com busca bibliográfica, realizada nas bases de dados eletrônicos PubMED/Medline, Lilacs, Science Direct e SciELO (Scientific Eletronic Library), utilizando os descritores: Hemangioma, Malformações vasculares, escleroterapia e fotocoagulação, em português, inglês e espanhol, obtendo 262 artigos completos, dos quais 18 foram utilizados como base científica apropriada para tal tema, obedecendo aos critérios de inclusão e exclusão. Resultados: As lesões vasculares orais caracterizam-se clinicamente como lesões únicas do tipo nódular ou mancha, cuja coloração varia do vermelho intenso ao roxo e de tamanho variável. Para diagnosticar essas lesões, utilizam-se comumente exames clínicos associados à diascopia, sem na maioria dos casos necessitarem de exames complementares. A intervenção terapêutica justifica-se devido às deformidades estéticas, possíveis sangramentos, ulcerações e infecções. Para tais alterações, existem diversas modalidades terapêuticas, incluindo escleroterapia, crioterapia, remoção cirúrgica e terapia de fotocoagulação a laser. Conclusão: As lesões vasculares orais exibem caracteristicas clinicas peculiares, apresentando-se como nódulos ou manchas, cuja coloração varia do vermelho intenso ao roxo. A diascopia é a manobra semiotécnica mais utilizada e confiável para o estabelecimento do diagnóstico clínico dessas lesões. A utilização de soluções esclerosantes apresenta-se como o tratamento mais descrito na literatura, seguido da fotocoagulação a laser(AU)

Introducción: Las enfermedades vasculares afectan con alta incidencia las regiones de cabeza y cuello. Cuando estas afectan la región bucal, se nota predilección por labios, lengua y comisura bucal, con predominio en el sexo femenino. Objetivo: Analizar sobre las lesiones vasculares bucales, enfatizando en las características clínicas, los métodos de diagnóstico y el enfoque terapéutico. Métodos: Se realizó una revisión bibliográfica en las bases de datos PubMED/Medline, Lilacs, Science Direct e SciELO. Se utilizaron los descriptores hemangioma, malformaciones vasculares, escleroterapia y fotocoagulación, en portugués, inglés y español. Se obtuvieron 262 artículos completos, de los cuales 18 fueron utilizados como base científica apropiada para tal tema, según los criterios de inclusión y exclusión. Resultados: Las lesiones vasculares bucales se caracterizan clínicamente como lesiones únicas del tipo nódular o mancha, cuya coloración varía del rojo intenso al púrpura y de tamaño variable. Para diagnosticar estas lesiones, se utilizan comúnmente exámenes clínicos asociados a la diascopia, sin que en la mayoría de los casos necesiten exámenes complementarios. La intervención terapéutica se justifica debido a las deformidades estéticas, posibles sangrados, ulceraciones e infecciones. Para estas alteraciones existen diversas modalidades terapéuticas, incluyendo escleroterapia, crioterapia, remoción quirúrgica y terapia de fotocoagulación láser. Conclusiones: Las lesiones vasculares bucales muestran características clínicas peculiares, presentándose como nódulos o manchas, cuya coloración varía del rojo intenso al púrpura. La diacopia es la maniobra semiotécnica más utilizada y confiable para el establecimiento del diagnóstico clínico de estas lesiones. El uso de soluciones claras se presenta como el tratamiento más descrito en la literatura, seguido de la fotocoagulación láser(AU)

Introduction: Vascular disorders affect the head and neck regions with high incidence. When they affect the oral region, there is a predilection for lips, tongue and mouth commissure, predominantly in the female. Objective: To analyze oral vascular lesions, emphasizing the clinical characteristics, diagnostic methods and therapeutic approach. Methods: A bibliographic review was carried out in the databases PubMED/Medline, Lilacs, Science Direct andSciELO (Scientific Electronic Library). We used the descriptors hemangioma, vascular malformations, sclerotherapy and photocoagulation, in Portuguese, English and Spanish. We obtained 262 complete articles, of which 18 were used as appropriate scientific basis for this topic, based on the inclusion and exclusion criteria. Results: Oral vascular lesions are clinically characterized as single lesions of the nodes or blotches, whose color varies from deep red to purple and are of variable size. In order to diagnose these lesions, clinical examinations associated with the periodontal disease are commonly used, although in most cases they do not require complementary examinations. The therapeutic intervention is justified due to aesthetic deformities, possible bleeding, ulcerations and infections. For such changes, there are several therapeutic modalities, including sclerotherapy, cryotherapy, surgical removal and laser photocoagulation therapy. Conclusions: Oral vascular lesions show peculiar clinical characteristics, presenting as nodules or spots, whose coloration varies from intense red to purple. Diascopy is the most used and reliable semi-technical method for establishing the clinical diagnosis of these lesions. The use of sclerosing solutions is the most described treatment in the literature, followed by laser photocoagulation(AU)

Lesões vasculares orais: avaliações clínicas, diagnósticas e terapêuticas / Lesiones vasculares bucales: evaluaciones clínicas, diagnósticas y terapéuticas / Oral vascular lesions: clinical, diagnostic and therapeutic evaluations

Introdução: As patologias vasculares acometem com alta incidência as regiões de cabeça e pescoço. Quando essas acometem a região oral, nota-se predileção por lábios, língua e comissura bucal, com predominância no sexo feminino. Objetivo: Analisar sobre as lesões vasculares orais, enfatizando as características clínicas, métodos de diagnósticos e abordagem terapêutica. Métodos: Trata-se de uma revisão literária, com busca bibliográfica, realizada nas bases de dados eletrônicos PubMED/Medline, Lilacs, Science Direct e SciELO (Scientific Eletronic Library), utilizando os descritores: Hemangioma, Malformações vasculares, escleroterapia e fotocoagulação, em português, inglês e espanhol, obtendo 262 artigos completos, dos quais 18 foram utilizados como base científica apropriada para tal tema, obedecendo aos critérios de inclusão e exclusão. Resultados: As lesões vasculares orais caracterizam-se clinicamente como lesões únicas do tipo nódular ou mancha, cuja coloração varia do vermelho intenso ao roxo e de tamanho variável. Para diagnosticar essas lesões, utilizam-se comumente exames clínicos associados à diascopia, sem na maioria dos casos necessitarem de exames complementares. A intervenção terapêutica justifica-se devido às deformidades estéticas, possíveis sangramentos, ulcerações e infecções. Para tais alterações, existem diversas modalidades terapêuticas, incluindo escleroterapia, crioterapia, remoção cirúrgica e terapia de fotocoagulação a laser. Conclusão: As lesões vasculares orais exibem caracteristicas clinicas peculiares, apresentando-se como nódulos ou manchas, cuja coloração varia do vermelho intenso ao roxo. A diascopia é a manobra semiotécnica mais utilizada e confiável para o estabelecimento do diagnóstico clínico dessas lesões. A utilização de soluções esclerosantes apresenta-se como o tratamento mais descrito na literatura, seguido da fotocoagulação a laser(AU)

Introducción: Las enfermedades vasculares afectan con alta incidencia las regiones de cabeza y cuello. Cuando estas afectan la región bucal, se nota predilección por labios, lengua y comisura bucal, con predominio en el sexo femenino. Objetivo: Analizar sobre las lesiones vasculares bucales, enfatizando en las características clínicas, los métodos de diagnóstico y el enfoque terapéutico. Métodos: Se realizó una revisión bibliográfica en las bases de datos PubMED/Medline, Lilacs, Science Direct e SciELO. Se utilizaron los descriptores hemangioma, malformaciones vasculares, escleroterapia y fotocoagulación, en portugués, inglés y español. Se obtuvieron 262 artículos completos, de los cuales 18 fueron utilizados como base científica apropiada para tal tema, según los criterios de inclusión y exclusión. Resultados: Las lesiones vasculares bucales se caracterizan clínicamente como lesiones únicas del tipo nódular o mancha, cuya coloración varía del rojo intenso al púrpura y de tamaño variable. Para diagnosticar estas lesiones, se utilizan comúnmente exámenes clínicos asociados a la diascopia, sin que en la mayoría de los casos necesiten exámenes complementarios. La intervención terapéutica se justifica debido a las deformidades estéticas, posibles sangrados, ulceraciones e infecciones. Para estas alteraciones existen diversas modalidades terapéuticas, incluyendo escleroterapia, crioterapia, remoción quirúrgica y terapia de fotocoagulación láser. Conclusiones: Las lesiones vasculares bucales muestran características clínicas peculiares, presentándose como nódulos o manchas, cuya coloración varía del rojo intenso al púrpura. La diacopia es la maniobra semiotécnica más utilizada y confiable para el establecimiento del diagnóstico clínico de estas lesiones. El uso de soluciones claras se presenta como el tratamiento más descrito en la literatura, seguido de la fotocoagulación láser(AU)

Introduction: Vascular disorders affect the head and neck regions with high incidence. When they affect the oral region, there is a predilection for lips, tongue and mouth commissure, predominantly in the female. Objective: To analyze oral vascular lesions, emphasizing the clinical characteristics, diagnostic methods and therapeutic approach. Methods: A bibliographic review was carried out in the databases PubMED/Medline, Lilacs, Science Direct andSciELO (Scientific Electronic Library). We used the descriptors hemangioma, vascular malformations, sclerotherapy and photocoagulation, in Portuguese, English and Spanish. We obtained 262 complete articles, of which 18 were used as appropriate scientific basis for this topic, based on the inclusion and exclusion criteria. Results: Oral vascular lesions are clinically characterized as single lesions of the nodes or blotches, whose color varies from deep red to purple and are of variable size. In order to diagnose these lesions, clinical examinations associated with the periodontal disease are commonly used, although in most cases they do not require complementary examinations. The therapeutic intervention is justified due to aesthetic deformities, possible bleeding, ulcerations and infections. For such changes, there are several therapeutic modalities, including sclerotherapy, cryotherapy, surgical removal and laser photocoagulation therapy. Conclusions: Oral vascular lesions show peculiar clinical characteristics, presenting as nodules or spots, whose coloration varies from intense red to purple. Diascopy is the most used and reliable semi-technical method for establishing the clinical diagnosis of these lesions. The use of sclerosing solutions is the most described treatment in the literature, followed by laser photocoagulation(AU)

Guidance Document for Hepatic Hemangioma (Infantile and Congenital) Evaluation and Monitoring.

OBJECTIVE: To define the types of hepatic hemangiomas using the updated International Society for the Study of Vascular Anomalies classification and to create a set of guidelines for their diagnostic evaluation and monitoring. STUDY DESIGN: We used a rigorous, transparent consensus protocol defined by an approved methodology, with input from multiple pediatric experts in vascular anomalies from hematology-oncology, surgery, pathology, radiology, and gastroenterology. RESULTS: In the first section, we define the subtypes of hepatic hemangiomas based on the clinical course, histology, and radiologic characteristics. We recommend against using the term "hemangioma" for any vascular malformations affecting the liver or any hypervascular tumors that are not characterized by the approved definitions. We recommend against using the term "hemangioendothelioma" for infantile or congenital hemangioma. The following 2 sections dedicated to infantile hepatic hemangioma and to congenital hepatic hemangioma individually describe these subtypes in further detail, including complications to be considered during monitoring and respectively recommended screening evaluations. CONCLUSIONS: Although institutional variations may exist for specific clinical details, a clear understanding of the diagnosis of hepatic hemangiomas affecting children and the possible complications that require screening during the monitoring period should be standard. As children with hepatic hemangiomas are managed by different medical and surgical specialties, we offer an expert opinion multidisciplinary consensus based on current literature and on data extracted from the liver hemangioma registry.

[Classification of vascular anomalies].

The classification of vascular anomalies has been revised, as physicians and researchers have recognised an increasing number of vascular anomalies. The International Society for the Study of Vascular Anomalies presents a classification distinguishing between tumours and malformations. Over the years, an inaccurate application of the term haemangioma has been used, which has led to confusion among physicians. By using the classification and combining it with a thorough history and objective examination a classification of the most common vascular anomalies should be possible.

Vascular Anomalies of the Orbit--A Reappraisal.

The recent International Society for the Study of Vascular Anomalies (ISSVA) classification of vascular anomalies can be applied to orbital lesions, dividing them into vascular tumors and vascular malformations. Orbital cavernous hemangiomas are probably best considered cavernous venous malformations under this classification. Management of symptomatic lesions can be with surgical excision or stereotactic fractionated radiotherapy in selected cases. Beta-blockers including propranolol and topical timolol maleate represent first-line therapy for infantile hemangiomas, although surgery has a role in selected cases. Orbital venous-lymphatic malformations are problematic but with improved imaging, neuroradiological intervention, and a multidisciplinary approach to management, outcomes are improving.

Algunas especificidades sobre los hemangiomas externos en niños / Some specificities on external hemangiomas in children

Los hemangiomas son tumores vasculares benignos con características biológicas muy específicas en la infancia; estos se pueden localizar en órganos, y reciben el nombre de internos, o en cabeza, cuello, tronco y extremidades, que son los denominados externos, los cuales crecen a una velocidad variable. Con este trabajo se buscó exponer algunas particulares clinicoepidemiológicas de los hemangiomas externos, su clasificación, diagnóstico y evolución. Asimismo, se refieren aspectos relacionados con la efectividad del propranolol como propuesta terapéutica de primera elección en niños y se presentan los resultados de algunos autores al respecto, que en su mayoría convergen en cuanto a la aplicación de este medicamento como de primera línea.

Hemangiomas are benign vascular tumors with very specific biological characteristics during childhood; these tumors can be located in organs, and receive the name of internal, or in head, neck, trunk and extremities that are denominated external, which grow to a variable speed. Some clinical epidemiological particularities of external hemangiomas were exposed with this work, such as their classification, diagnosis and clinical course. Also, there is a reference to some aspects related to the effectiveness of propranolol as therapeutic proposal of first election in children and the results of some authors in this respect are presented, most of which coincide as for its use as first line medication.

An update of 77 cases diagnosed as oral hemangiomas based on GLUT-1 positivity.

OBJECTIVES: To evaluate cases diagnosed as "oral hemangiomas" based on the immunohistochemical expression of human glucose transporter protein (GLUT-1) and on histopathological features, and to investigate whether the classification proposed by the ISSVA was used correctly to classify these lesions. MATERIAL AND METHODS: All cases stored in the archives of an Oral Pathology Service and diagnosed as "oral hemangiomas" were reviewed. Seventy-seven cases were analyzed regarding the expression of GLUT-1. GLUT-1(+) specimens were classified as true infantile hemangioma (IH) and GLUT-1(-) specimens were reclassified based on their histopathological features. The nomenclature of these lesions was evaluated and some cases were reclassified. RESULTS: Only 26 (33.8%) of the specimens were indeed IHs. Among the GLUT-1(-) specimens, 20 (26.0%) were reclassified as pyogenic granulomas (PGs) and 31 (40.2%) as vascular malformations. Considering the previously applied nomenclature, only 47.5% of the cases initially diagnosed as "hemangiomas" were IHs. In the group of "capillary hemangiomas", most cases (56.2%) were PGs. Among the three "cellular hemangiomas", two were PGs and one was IH. Most (88.8%) "cavernous hemangiomas" were vascular malformations. CONCLUSION: Careful and parameterized review of cases of vascular anomalies is necessary using auxiliary tools such as GLUT-1, since the exclusive use of histopathological findings might be insufficient to differentiate some anomalies. CLINICAL RELEVANCE: Accurate clinical examination and the use of biomarkers such as GLUT-1 are essential for the diagnosis.

FR - Hemangioma verrucoso o malformación venosa verrucosa? Hacia una clasificación asentada en el estudio genético / Verrucous Hemangioma or Verrucous Venous Malformation? Towards a Classification Based on Genetic Analysis

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