Hiperplasia angiolinfoide com eosinofilia: um caso raro em cavidade oral / Angiolymphoid hyperplasia with eosinophilia: a rare case in the oral cavity

Resumo A hiperplasia angiolinfoide com eosinofilia (HALE) é considerada uma lesão vascular benigna rara que acomete, principalmente, o tecido cutâneo e subcutâneo da região de cabeça e pescoço, mas incomum na cavidade oral. Sua etiopatogenia permanece indefinida, sendo descrita como proliferação vascular reacional, malformação vascular ou neoplasia. Tem como principal diagnóstico diferencial a doença de Kimura. Este trabalho relata um caso de um paciente do sexo masculino, de 50 anos, que exibia aumento de volume nodular na mucosa do lábio superior, com 3 cm de dimensão e 7 anos de evolução. Após a biópsia excisional, o exame histopatológico mostrou lesão bem encapsulada multilobulada com proliferação de capilares sanguíneos com células endoteliais de aspecto epitelioide, infiltrado inflamatório difuso com linfócitos, plasmócitos, inúmeros eosinófilos e presença de folículos linfoides. A análise imuno-histoquímica revelou positividade para CD34 e Ki-67, o que, juntamente com o exame morfológico, direcionou o diagnóstico para HALE.

Abstract Angiolymphoid Hyperplasia with eosinophilia (ALHE) is considered a rare, benign vascular lesion that mainly affects the skin and subcutaneous tissues of the head and neck, but is uncommon in the oral cavity. Its etiology remains unclear and it has been described as a reactive vascular proliferation, vascular malformation or neoplasm. Kimura's disease is the primary entity to consider in differential diagnosis. Here we report on a rare case of ALHE involving the upper lip of a 50-year-old male patient that had a nodular swelling with approximately 3 cm, 7 years after initial onset. An excisional biopsy was performed and histopathologic examination revealed a well-encapsulated, multi-lobed lesion with proliferation of blood capillaries, displaying endothelial cells of epithelioid appearance, diffuse inflammatory infiltrate with lymphocytes, plasma cells, numerous eosinophils, and presence of lymphoid follicles. Immunohistochemical tests were positive for the markers CD34 and Ki-67 that, in combination with the results of morphological examination, were suggestive of a diagnosis of ALHE.

Hemangioma: descrição de um caso clínico e sua importância no diagnóstico diferencial / Hemangioma: description of a clinical case and the importance in the differential diagnosis

O hemangioma infantil é um tumor vascular benigno que ocorre devido a uma proliferação anormal dos vasos sanguíneos. O quadro clínico apresenta três fases bem definidas: proliferativa, involutiva e involuída. O diagnóstico é realizado basicamente por meio da anamnese e do exame físico, e quando necessário preconiza-se avaliação histopatológica. O presente trabalho, descreve um caso clínico de um hemangioma presente em um bebê de 3 meses de idade que foi, de principio, diagnosticado como mucocele ou fibroma. A cirurgia excisional foi realizada eo material encaminhado para análise histopatológica, confirmando o diagnóstico de hemangioma. Nessas situações, vale ressaltar a importância do diagnostico diferencial, manobra cirúrgica adequada e a avaliação das características clínicas da lesão para evitar possíveis complicações cirurgicas.

The infantile hemangioma is a benign vascular tumor which occurs due to an abnormal proliferation of blood vessels. The clinical features three well-defined phases: proliferative, involution,and involuted. The diagnosis is made primarily by clinical history and physical examination, but when necessary, help to close the histopathological diagnosis. This paper describes a clinical case of a gift hemangioma in a baby three months old who was, in principle, diagnosed as mucocele or fibroma. The excisional surgery was performed and material sent for histopathological confirmation hemangioma. It is worth emphasizing the importance of differential diagnosis, appropriate surgical maneuver, assessment of clinical characteristics of the lesion to prevent potential surgical complications possible.

Lesiones vasculares en la infancia: experiencia institucional del hospital del niño "Dr. Ovidio Aliaga" La Paz Bolivia de 1999-2008 / Vascular lesions in childhood: institucional experiencie children`s hospital

Las lesiones vasculares son frecuentes en la infancia, se las ha clasificado en tumores y malformaciones vasculares. En nuestro estudio se revisaron 113 casos de pacientes con lesiones vasculares a lo largo de 10 años, encontrándose 52 hemangiomas, 52 linfangiomas, 8 hemolinfangiomas y 1 hemangioendotelioma. Los hemangiomas y linfangiomas se presentaron con más frecuencia en el sexo femenino. La localización más frecuente del hemangioma fue la cabeza, siendo el hermangioma capilar el tipo histológico más frecuente. El linfangiomase presentó en la región cervical, siendo el linfangioma quístico la variedad más frecuente...

Vascular lesions are frequent during infancy, they are classified in tumors and vascular malformations. A total of 113 cases of patients with vascular lesions were collected in a 10 year-period, we found 52 hemangiomas, 52 lymphangiomas, 8 hemolymphangiomas and 1 hemangioendothelioma. Hemangiomas and lymphangiomas were more frequent in females than in males. Most of the hemangiomas were located on the head, the capillary hemangioma was the most frequent. Lymphangiomas were located on the neck, the cystic lymphangioma being the most frequent. (AU)

Hepatic Hemangioma with Arterioportal Shunts / 대한간학회지

No abstract available.

Focal Hepatic Lesions: Contrast-Enhancement Patterns at Pulse-Inversion Harmonic US using a Microbubble Contrast Agent

OBJECTIVE: To analyze the contrast-enhancement patterns obtained at pulseinversion harmonic imaging (PIHI) of focal hepatic lesions, and to thus determine tumor vascularity and the acoustic emission effect. MATERIALS AND METHODS: We reviewed pulse-inversion images in 90 consecutive patients with focal hepatic lesions, namely hepatocellular carcinoma (HCC) (n=43), metastases (n=30), and hemangioma (n=17). Vascular and delayed phase images were obtained immediately and five minutes following the injection of a microbubble contrast agent. Tumoral vascularity at vascular phase imaging and the acoustic emission effect at delayed phase imaging were each classified as one of four patterns. RESULTS: Vascular phase images depicted internal vessels in 93% of HCCs, marginal vessels in 83% of metastases, and peripheral nodular enhancement in 71% of hemangiomas. Delayed phase images showed inhomogeneous enhancement in 86% of HCCs; hypoechoic, decreased enhancement in 93% of metastases; and hypoechoic and reversed echogenicity in 65% of hemangiomas. Vascular and delayed phase enhancement patterns were associated with a specificity of 91% or greater, and 92% or greater, respectively, and with positive predictive values of 71% or greater, and 85% or greater, respectively. CONCLUSION: Contrast-enhancement patterns depicting tumoral vascularity and the acoustic emission effect at PIHI can help differentiate focal hepatic lesions.

Potential Role of Homer-2a on Cutaneous Vascular Anomaly

Homer protein was identified based on its rapid induction in rat hippocampal granule cell neurons following excitatory synaptic activity. Although the presence of the Homer gene in the peripheral tissues has been observed in previous reports, the physiological function of the Homer protein in these tissues has not been noted. In this experiment, a Homer-2a cDNA fragment was successfully amplified by RTPCR in the involuting phase of human hemangioma but not in the human vascular malformation and normal vessel. After isolation of full Homer cDNA in a mouse liver cDNA library, E1-deleted recombinant adenovirus expressing the Homer protein (Adv.CMV.mHomer-2a) was constructed to determine its physiological function in peripheral tissues. Adv.CMV.mHomer2a, but not Adv.CMV.LacZ (recombinant adenovirus expressing beta-galactosidase), strongly inhibited the growth rate of HUVECs (human umbilical vein endothelial cells) probably via inducing apoptosis determined by acridine orange/ethidium bromide (AO/EB) staining methods. This study suggests that the Homer gene is present in human specimens in the involuting phase of hemangioma, and it might be involved in the growth control.