Capillary Hemangioma (capillary + hemangioma)

Distribution by Scientific Domains


Selected Abstracts


Pyogenic granuloma of the oral cavity: Comparative study of its clinicopathological and immunohistochemical features

PATHOLOGY INTERNATIONAL, Issue 7 2005
Apostolos Epivatianos
There are two histological types of pyogenic granuloma (PG) of the oral cavity: the lobular capillary hemangioma (LCH) and non-LCH type. The aim of the present study was to examine and compare the clinical features, etiological factors, diameter of vascular elements and immunohistochemical features of LCH and non-LCH histological types of PG to determine whether they are two distinct entities. Thirty cases of LCH and 26 cases of non-LCH PG were retrieved and retrospectively studied. Clinically, LCH PG occurred more frequently (66.4%) as sessile lesion whereas non-LCH PG occurred as pedunculated (77%). Non-LCH PG was associated more frequently (86.4%) with etiological factors. The lobular area of the LCH PG contained a greater number of blood vessels with small luminal diameter than did the central area of non-LCH PG. In the central area of non-LCH PG a significantly greater number of vessels with perivascular mesenchymal cells non-reactive for ,-smooth muscle actin and muscle-specific actin was present than in the lobular area of LCH PG. The differences found in the present study suggest that the two histological types of PG represent distinct entities. [source]


Lobular capillary hemangioma of the oral mucosa: Clinicopathological study of 43 cases with a special reference to immunohistochemical characterization of the vascular elements

PATHOLOGY INTERNATIONAL, Issue 1 2003
Makoto Toida
Clinical and histopathological features were investigated in 43 cases of oral lobular capillary hemangiomas (LCH) with a special reference to characteristics of the vascular elements. The lesions affected females more than males by a ratio of 1:1.5. Average age of the patients was 52.7 years. The lesions involved the gingiva (n = 15), the tongue (n = 13), the labial mucosa (n = 10) and other sites. The lesions appeared usually as a pedunculated mass with ulceration; size of the lesions was up to 15 mm. Histologically, a lobular area and an ulcerative area were distinguished. The density of vessels was about 1045/mm2 and 160/mm2 in the lobular and ulcerative areas, respectively. The average diameter of the vascular lumen was 9.1 5.6 mm (range: 2.8,42.0 mm) and 18.8 20.9 mm (range: 5.6,139.7 mm) in the lobular and ulcerative areas, respectively. In the lobular area, most of the vessels had an inner layer of endothelial cells showing positive reaction for von Willebrand factor (vWF) and CD34, as well as an outer layer of mesenchymal cells showing positive reaction for alpha-smooth muscle actin (ASMA). However, in the ulcerative area, there was a variety of types of vessels consisting of various proportions of both endothelial and ASMA-positive perivascular mesenchymal cells. These results indicate that most of the vascular elements in the lobular area resemble more pericapillary microvascular segments than they do capillaries. Thus, the authors propose the term ,lobular pericapillary hemangioma' to represent this type of lesion. [source]


Splenic cord capillary hemangioma and anemia: Resolution after splenectomy

AMERICAN JOURNAL OF HEMATOLOGY, Issue 7 2006
Meredith Kato
Abstract A 59-year-old female presented with isolated anemia and a splenic mass. Standard histology and immunohistochemical techniques categorized the splenic lesion as a cord capillary hemangioma. The patient's anemia resolved following splenectomy. Cord capillary hemangiomas are exceedingly rare with few reports in the literature. This is the first reported case of resolution of anemia after splenectomy for a vascular tumor of the spleen. Am. J. Hematol. 81:538,542, 2006. © 2006 Wiley-Liss, Inc. [source]