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

✓Spinal angiolipomas are rare, benign lesions representing 0.14 to 1.2% of all spinal axis tumors. They most commonly involve the midthoracic spine and are located in the posterior epidural space. Up to now, six pediatric cases have been reported in the literature; two of them involved an acute clinical onset that was related to a venous infarction of a tumor. The authors report the case of a 16-year-old boy with a midthoracic epidural angiolipoma who was admitted with a clinical history of an acute paraparesis. In contrast to previous descriptions, the acute onset in this case was related to a spontaneous intratumoral abscess within the tumor.

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Nicola Montano, Mariangela Novello, Quintino Giorgio D'Alessandris, Nicola Magarelli, Roberto Pallini, Libero Lauriola and Eduardo Fernandez

Benign neurogenic tumors at the sciatic notch that are purely intrapelvic have rarely been reported. Because of this tumor's particular position, a transabdominal or combined transabdominal-gluteal approach is usually used to achieve total resection. However, the transabdominal approach carries a remarkable surgical risk because of the manipulation of intraperitoneal organs. Here, the authors describe a 59-year-old woman harboring a purely intrapelvic sciatic notch schwannoma extrinsic to the sciatic nerve, which was totally removed via the infragluteal approach preserving sciatic function. The postoperative course was uneventful. The infragluteal approach can be safely used for the effective resection of intrapelvic benign neurogenic tumors at the sciatic notch that are extrinsic to the sciatic nerve, avoiding the more invasive and risky transabdominal approach.

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Alfredo Puca, Cesare Colosimo, Barbora Tirpakova, Libero Lauriola and Federico Di Rocco

✓ Extraaxial cavernous hemangiomas are rare intracranial lesions that can be located in different cranial compartments. Extension across different tissue planes such as the subcutaneous tissue, skull, orbital cavity, intracranial dura mater, and extracranial trigeminal divisions within the same patient has not been previously reported.

This 32-year-old woman suffered left exophthalmos, left sixth nerve palsy, and trigeminal neuropathy. Magnetic resonance imaging studies revealed an extensive multicompartmental lesion, with enhancement following Gd administration.

A left orbitopterional approach allowed removal of several cavernomatous lesions located in the orbit, frontotemporal dura, and lateral wall of the cavernous sinus. A histologically based diagnosis of extraaxial cavernous hemangioma was made. In the postoperative period the patient experienced a regression of her symptoms.

The authors report on a case of cavernous hemangioma with a unique extension to different intracranial/extracranial compartments. Although radical removal of the lesion was not feasible, partial excision allowed for satisfactory clinical control of the patient's symptoms.

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Luca Denaro, Federico Di Rocco, Marco Gessi, Libero Lauriola, Liverana Lauretti, Roberto Pallini, Eduardo Fernandez and Giulio Maira

✓ Chordoid meningioma is a rare meningothelial tumor characterized by chordoma-like histological features with lymphoplasmacellular infiltration. This tumor is often seen in children, but not in adults, with a systemic inflammatory syndrome (iron-resistant microcytic anemia and/or dysgammaglobulinemia) and very rarely with a persistent moderate hyperthermia.

In the present report the authors describe a temporal chordoid meningioma in a 30-year-old woman who presented with fever, headache, and a serological inflammatory syndrome. The clinical symptomatology, chiefly the fever, disappeared immediately after removal of the tumor. To the authors' knowledge, only one similar patient with such clinical presentation and response to surgery has been mentioned in the literature. Interestingly, at immunohistochemical examination, the neoplasm showed focal positivity for the pyrogenic cytokine interleukin-6. The capacity of the tumor to produce this pyrogenic cytokine could explain both the patient's clinical presentation and her response to the surgical management.

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Nicola Montano, Francesco Doglietto, Alessandro Pedicelli, Alessio Albanese, Liverana Lauretti, Roberto Pallini, Libero Lauriola, Eduardo Fernandez and Giulio Maira