Kaposiform hemangioendothelioma is a rare human vascular neoplasm. In veterinary medicine this tumor type was only recognized in the dog. Here we describe an unusual case arising in the urinary bladder of a Holstein-Friesian adult cow. Histologically the tumor presented a nodular proliferation of spindle cells, forming angular slits, often containing extravasated erythrocytes. Peripherically, w...

primary benign neoplasm of spleen and usually represents a small localized tumor. Diffuse hemangiomatosis of the spleen is a variant of hemangioma in which the splenic parenchyma is widely replaced by vascular proliferations. This condition may be confined to the spleen or may occur as a manifestation of systemic angiomatosis. Associations of splenic hemangiomatosis with Beckwith-Wiedeman syndr...

INTRODUCTION Vascular lesions of ovary are very rare, especially ovarian hemangiomas. CASE REPORT – presenting a case of ovarian capillary hemangioma with massive ascites and elevated Ca 125 level. DISCUSSION – Hemangiomas are common in other organs but ovarian hemangioma are very rare despite its rich vascular supply. Here presenting a case of ovarian capillary hemangioma with massive ascites ...

numerous orbital neoplastic and non neoplastic processes. Various mesenchymal tumours of both fibrohistiocytic and vascular origin are well-described causes. Hemangiopericytomas (HPC) are rare vascular tumours which can infrequently involve the orbit and their incidence is estimated to be 0.8% to 3% of primary orbital tumours1,2. We herein report a new case of orbital HPC revealed by unilateral...

A 24-year-old woman with slowly progressive altered mental status and fevers was found to have multiple brain mass lesions. A characteristic branching vascular pattern on T2* MRI (figure 1D) was key to identifying these mass lesions as vascular in origin. CSF was inflammatory and serologic testing supported the diagnosis of systemic lupus erythematosus with concomitant CNS angiitis affecting de...

kaposiform hemangioendothelioma (khe) appears as a single lesion at birth or early infancy in an equal sex ratio. a rare aggressive vascular proliferation has been recognized as a separate entity from other childhood vascular neoplasm. a 3-year-old iranian boy with a rapidly enlarging mass in his (posterior aspect of skull at the midline) skull was present here. physical examination revealed a ...

BA: bacillary angiomatosis CEAN: cutaneous epithelioid angiomatous nodule EH: epithelioid hemangioma KS: Kaposi sarcoma PyG: pyogenic granuloma INTRODUCTION Cutaneous epithelioid angiomatous nodule (CEAN) is a recently described rare vascular proliferation. Although this neoplasm is more commonly reported as a solitary papule or nodule on the trunk or extremities, eruptive patterns have been re...

We report a rare case of intravascular papillary endothelial hyperplasia (IPEH) of the oral mucosa. This neoplasm, known as Masson's tumor, is an unusual vascular lesion of proliferating endothelial cells. It is usually confined to the lumen of preexisting vessels or vascular malformations. The principal significance of IPEH is its microscopic resemblance to angiosarcoma and possible misdiagnos...

Background: Epithelioid vascular tumors are uncommon vascular neoplasm that predominately occur on the head and neck. Histological descriptions have been used to classify these tumors as either benign epitheloid hemangiomas or malignant epitheloid hemangioendotheliomas and epithelioidangiosarcoma. Although extremely rare, 17 cases of hemangioendothelioma of the penis have been reported in the l...

1 Stout AP, Murray MR. Haemangiopericytoma: a vascular tumour featuring Zimmerman's pericytes. Ann Surg 1942;116:26-33. 2 Bailey PV, Weber TR, Tracy TF, et al Congenital haemangiopericytoma: An unusual vascular neoplasm of infancy. Surgery 1993;114:936-41. 3 Depowski M, Maciejewski Z. Przypadek wrodzonego haemangiopericytoma oczodolu. [Congenital idiopathic orbital haemangiopericytoma.] Patol P...