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Spinal angiolipomas

Report of three cases

Mark C. Preul, Richard Leblanc, Donatella Tampieri, Yves Robitaille and Ronald Pokrupa

S pinal angiolipomas represent a distinct clinical and pathological entity traditionally grouped as a variant of lipoma. 7, 10, 11, 16, 21, 35 They accounted for approximately 1.2% of all spinal axis tumors, 3% of extradural spinal tumors, and 24% of spinal lipomas (excluding cases of myelovertebral anomalies) operated on at the Montreal Neurological Hospital between 1965 and 1991. Spinal angiolipomas are composed of mature adipocytes and abnormal blood vessels that vary from capillary, to sinusoid or venular, to arterial in size. Angiolipomas probably

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Gianpaolo Petrella, Gianpiero Tamburrini, Libero Lauriola and Concezio Di Rocco

histological diagnosis was angiolipoma: a prevalent adipose tissue was intermixed with mature, thick-walled vessels without cellular atypia. The Ki-67 labeling index was less than 1% ( Fig. 2 ). Microbiological examination revealed the presence of Staphylococcus aureus in the intraoperative samples. An antibiotic therapy based on tested bacterial sensitivity was administered (amoxicillin and clavulanic acid 1 g twice daily for 10 days). Fig. 1. Magnetic resonance images of the thoracic spine. Left: Sagittal T 2 -weighted image without Gd enhancement demonstrating

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Benoît Pirotte, Boris Krischek, Marc Levivier, Serge Bolyn, Jean-Marie Brucher and Jacques Brotchi

A ngiolipomas (ALs) are hamartomas composed of abnormally differentiated vessels and adipose tissue. 1, 2, 5 They represent a distinct clinical and pathological entity, are usually considered to be a variant of lipomas, and are commonly found in the skin, muscle, bone, kidney, or the oral cavity. 1, 2, 4, 5 Angiolipomas may grow in the spinal epidural space where their appearance on computerized tomography (CT) and magnetic resonance (MR) imaging exhibits the characteristics of both adipose and vascular tissues. 6, 7, 12, 16, 17 When these benign lesions

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Patrick François, Ilyess Zemmoura, Anne Marie Bergemer Fouquet, Michel Jan and Stéphane Velut

A ngiolipomas of the CNS are rare, benign tumors originating in mesenchymal tissue and are constituted by a proliferation of mature fat cells and endothelial cells. 1 , 17 , 23 , 33 They most frequently develop in the epidural space of the spine, the cavernous spaces, and more rarely in the orbit. 2 , 5 , 8 , 10 , 12 , 13 , 15 , 16 , 18 , 22 , 24 , 26 , 28 , 31 , 35–37 Few publications have reported them outside of these locations, in particular at the level of the tectal lamina and the thalamus. 21 , 25 Angiolipomas represent an anatomopathological

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Marcos Devanir Silva da Costa, Daniel de Araujo Paz, Thiago Pereira Rodrigues, Ana Camila de Castro Gandolfi, Fabricio Correa Lamis, João Norberto Stavale, Italo Capraro Suriano, Luiz Daniel Marques Neves Cetl and Sergio Cavalheiro

A ngiolipomas are benign tumors that comprise mature fat cells and proliferating blood vessels and commonly affect the subcutaneous tissues of the trunk and extremities. 4 , 6 Spinal angiolipoma accounts for approximately 0.14%–1.2% of spinal axis tumors, 3 , 6 , 15 which are predominantly found in the epidural space. 4 Approximately 39% of angiolipomas present with bone infiltration. 12 They predominately distribute in the thoracic region, followed by the lumbar and cervical spine in the dorsolateral region. 4 , 11 These tumors induce slow

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Neurosurgical Forum: Letters to the editor To The Editor Carlo Alberto Pagni , M.D. , Sergio Canavero , M.D. Institute of Neurosurgery, University of Turin, Turin, Italy 354 354 We would like to make some points with respect to an article on spinal angiolipomas (Preul MC, Leblanc R, Tampieri D, et al: Spinal angiolipomas. Report of three cases. J Neurosurg 78: 280–286, February, 1993). Recently we published a similar review. 2 We agree that the female sex is most affected, particularly in middle age

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Wouter I. Schievink, Reid C. Thompson and William H. Yong

exhibited features typical of angiolipomas ( Fig. 2 ). Fig. 2. Photomicrograph demonstrating small vascular (capillary) proliferations and mature adipocytes in an angiolipoma. Masson trichrome, original magnification × 200. Treatment and Course of the Disease Aspirin was administered, and 6 months following the onset of symptoms a pterional craniotomy was performed. The aneurysm was found to be fusiform, involving the entire supraclinoid portion of the ICA; the lesion was wrapped with cotton. Echocardiography results were nondiagnostic. Abdominal

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Ying-Chao Lin, Chao-Cheng Huang and Han-Jung Chen

L ipomas can occur in any body site and have a variety of histological characteristics such as fibrolipoma and angiolipoma. Metaplasia with the formation of cartilage and bone is referred to as osteolipoma or chondrolipoma. Lipoma can also occur as a rare complication of corticosteroid treatment, as in lipomatosis. 5 Intraspinal lipoma is rarely associated with an absence of spinal cord compression symptoms. 6 Those lesions that have been reported to produce cord compression belong to two groups: lipomatosis and angiolipoma. 6, 7, 16 To the best of our

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Dimitris Zevgaridis, Kimon Nanassis and Thomas Zaramboukas

L ipomas can occur in any body site and have a variety of histological characteristics. Intraspinal extradural lipomas are rare lesions. Not associated with spinal dysraphism, they account for ~ 0.4–0.8% of all intraspinal tumors. 4 These lipomatous masses must be differentiated histologically into the angiolipoma and the true adult lipoma. True adult lipomas also have to be distinguished from SEL in which excess adipose tissue is deposited circumferentially around the spinal cord in the epidural space, often associated with chronic systemic steroid

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Fred G. Barker II, Peter J. Jannetta, Ramesh P. Babu, Spiros Pomonis, David J. Bissonette and Hae Dong Jho

angiolipoma. TABLE 2 Tumor type in 26 patients with trigeminal neuralgia and a posterior fossa tumor Tumor Type No. of Patients Percent meningioma 14 54 acoustic neuroma 8 31 epidermoid 2 8 ependymoma 1 4 angiolipoma 1 4 In three patients with meningiomas, the trigeminal nerve appeared to be invaded by tumor and the nerve was partially resected at operation. In the other 23 patients the degree of distortion of the trigeminal root caused by the tumor varied widely, from “normal