Thursday, January 21, 2010
Answer of Dermatopathology Case 36
Angiolymphoid Hyperplasia with Eosinophilia (Epithelioid Hemangioma)
Visit: Angiolymphoid hyperplasia with eosinophilia(Epithelioid Hemangioma)
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Visit: Pathology of Vascular Tumours
Epithelioid hemangioma (angiolymphoid hyperplasia with eosinophilia) of theorbit: a case report. J Med Case Reports. 2007 Jun 25;1:30.
ABSTRACT: BACKGROUND: Angiolymphoid hyperplasia with eosinophilia (ALHE) and Kimura's Disease (KD) share many clinical and histopathological features. Although they were once considered different stages of the same disease, they arenow known to represent separate entities. Recently, ALHE is being called epithelioid hemangioma (EH), a term that better describes the possible neoplastic nature of the entity. CASE PRESENTATION: An eighteen year-old Asian female presented with a three-month history of fluctuating swelling and ptosis of the left upper eyelid. Computed tomography disclosed a distinct homogeneous lesion in the left superior orbit, molding to the globe and other orbital structures. At histopathological evaluation the lesion was composed of numerous blood vessels lined by plump endothelial cells with oval nuclei protruding into the lumen. Surrounding the vessels, there was a chronic inflammatory infiltrate with a large proportion of eosinophils. Based on clinical and histopathological findings, the diagnosis of EH was made. CONCLUSION: Although exams like blood count, urinalysis and whole body scans can assist in the differential diagnosis, EH can be diagnosed and differentiated from KD on histopathological grounds. The presenceof vascular hyperplasia with plump endothelial cells protruding into the lumen is the most important discriminator in establishing the diagnosis of EH. Such distinction is crucial for the patient because EH is not associated with any ofthe systemic manifestations present in KD.
Angiolymphoid hyperplasia with eosinophilia (epithelioid hemangioma) of the lung: a clinicopathologic and immunohistochemical study of two cases. Am J Clin Pathol. 2005 May;123(5):762-5.
Two cases of primary angiolymphoid hyperplasia with eosinophilia (epithelioidhemangioma) (ALHE/EH) of the lung are described. Both patients are white, a 60-year-old man and a 27-year-old woman. One patient had a long-standing history of asthma, and the other had symptomatology related to the pulmonary mass. Wedge resections were performed in both cases, and both lesions shared similar histopathologic changes, mainly the presence of a tumor mass with a marked presence of eosinophils in the background, lymphoid hyperplasia, and marked proliferations of small-caliber vessels. Immunohistochemical studies using leukocyte common antigen, L-26, and UCHL-1 nicely stained the lymphoid component of the lesion, and CD31 clearly outlined the vascular component of the process. Clinical follow-up demonstrated that the woman died of status asthmaticus, andthe man was alive and well 1 year after surgical resection of the lesion. Both cases highlight the ubiquitous distribution of ALHE/EH and underscore theimportance of keeping these lesions in the differential diagnosis of vascular and lymphoid lesions of the lung.