1210
Case Reports / Journal of Clinical Neuroscience 22 (2015) 1210–1212
differential diagnosis and avoid potential diagnostic and therapeutic pitfalls. Conflicts of Interest/Disclosures The authors declare that they have no financial or other conflicts of interest in relation to this research and its publication. References [1] Sanchez-Mejia RO, Limbo M, Tihan T, et al. Intracranial dermoid cyst mimicking hemorrhage. Case report and review of the literature. J Neurosurg 2006;105:311–4. [2] Brown JY, Morokoff AP, Mitchell PJ, et al. Unusual imaging appearance of an intracranial dermoid cyst. AJNR Am J Neuroradiol 2001;22:1970–2. [3] Smirniotopoulos JG, Chiechi MV. Teratomas, dermoids, and epidermoids of the head and neck. Radiographics 1995;15:1437–55.
[4] Neugroschl C, David P, Sadeghi N, et al. Unusual CT features of dermoid cyst in the posterior fossa. Eur Radiol 2002;12:2726–9. [5] Bucciero A, Del Basso De Caro ML, Carraturo S, et al. Supratentorial dermoid cysts. Presentation and management of five cases. J Neurosurg Sci 1995;39: 7–11. [6] Lunardi P, Missori P. Supratentorial dermoid cysts. J Neurosurg 1991;75: 262–6. [7] Bizzozero L, Talamonti G, D’Angelo VA, et al. Dermoid cyst mimicking hematoma in the posterior fossa. Clin Neurol Neurosurg 1992;94:61–3. [8] Goh GJ, Page RD, Nixon TE. An unusual CT and MR appearance of a posterior fossa dermoid. Eur J Radiol 1995;20:46–7. [9] Wang X, Yu Y, Zhang X, et al. Unusual imaging appearance of a huge intracranial dermoid cyst located across the anterior and middle skull base. J Neurol Surg A Cent Eur Neurosurg 2013;74:e185–7. [10] Smirniotopoulos JG, Rushing EJ, Mena H. Pineal region masses: differential diagnosis. Radiographics 1992;12:577–96. [11] Truwit CL, Barkovich AJ. Pathogenesis of intracranial lipoma: an MR study in 42 patients. AJNR Am J Neuroradiol 1990;11:665–74.
http://dx.doi.org/10.1016/j.jocn.2015.02.004
Solitary lung metastasis from intracranial hemangiopericytoma 18 years after initial resection Erika E. Doxtader, Sanjay Mukhopadhyay, Richard A. Prayson ⇑ Department of Pathology, Cleveland Clinic, Level 25, 9500 Euclid Avenue, Cleveland, OH 44195, USA
a r t i c l e
i n f o
Article history: Received 9 February 2015 Accepted 14 February 2015
Keywords: Hemangiopericytoma Lung Metastasis
a b s t r a c t We report a 29-year-old woman who presented with severe headache, nausea and vomiting. A lesion was found in the left petrous ridge and near-total resection was performed. Pathologic examination showed anaplastic hemangiopericytoma (World Health Organization Grade III). Hemangiopericytoma is an uncommon mesenchymal tumor that rarely occurs in an intracranial location. Prior studies have reported a surprisingly high rate of late recurrence and extracranial metastases from intracranial hemangiopericytomas, including metastases to the lungs. Resection was followed by external beam radiation. The tumor recurred intracranially 6 and 13 years later and was treated with gamma knife stereotactic radiosurgery. At year 14, she noticed a lump in her neck and underwent parotidectomy for a mucoepidermoid carcinoma. This new diagnosis prompted a staging chest CT scan which showed a 4 mm right upper lobe lung nodule along with additional
Case Reports / Journal of Clinical Neuroscience 22 (2015) 1210–1212
differential diagnosis and avoid potential diagnostic and therapeutic pitfalls. Conflicts of Interest/Disclosures The authors declare that they have no financial or other conflicts of interest in relation to this research and its publication. References [1] Sanchez-Mejia RO, Limbo M, Tihan T, et al. Intracranial dermoid cyst mimicking hemorrhage. Case report and review of the literature. J Neurosurg 2006;105:311–4. [2] Brown JY, Morokoff AP, Mitchell PJ, et al. Unusual imaging appearance of an intracranial dermoid cyst. AJNR Am J Neuroradiol 2001;22:1970–2. [3] Smirniotopoulos JG, Chiechi MV. Teratomas, dermoids, and epidermoids of the head and neck. Radiographics 1995;15:1437–55.
[4] Neugroschl C, David P, Sadeghi N, et al. Unusual CT features of dermoid cyst in the posterior fossa. Eur Radiol 2002;12:2726–9. [5] Bucciero A, Del Basso De Caro ML, Carraturo S, et al. Supratentorial dermoid cysts. Presentation and management of five cases. J Neurosurg Sci 1995;39: 7–11. [6] Lunardi P, Missori P. Supratentorial dermoid cysts. J Neurosurg 1991;75: 262–6. [7] Bizzozero L, Talamonti G, D’Angelo VA, et al. Dermoid cyst mimicking hematoma in the posterior fossa. Clin Neurol Neurosurg 1992;94:61–3. [8] Goh GJ, Page RD, Nixon TE. An unusual CT and MR appearance of a posterior fossa dermoid. Eur J Radiol 1995;20:46–7. [9] Wang X, Yu Y, Zhang X, et al. Unusual imaging appearance of a huge intracranial dermoid cyst located across the anterior and middle skull base. J Neurol Surg A Cent Eur Neurosurg 2013;74:e185–7. [10] Smirniotopoulos JG, Rushing EJ, Mena H. Pineal region masses: differential diagnosis. Radiographics 1992;12:577–96. [11] Truwit CL, Barkovich AJ. Pathogenesis of intracranial lipoma: an MR study in 42 patients. AJNR Am J Neuroradiol 1990;11:665–74.
http://dx.doi.org/10.1016/j.jocn.2015.02.004
Solitary lung metastasis from intracranial hemangiopericytoma 18 years after initial resection Erika E. Doxtader, Sanjay Mukhopadhyay, Richard A. Prayson ⇑ Department of Pathology, Cleveland Clinic, Level 25, 9500 Euclid Avenue, Cleveland, OH 44195, USA
a r t i c l e
i n f o
Article history: Received 9 February 2015 Accepted 14 February 2015
Keywords: Hemangiopericytoma Lung Metastasis
a b s t r a c t We report a 29-year-old woman who presented with severe headache, nausea and vomiting. A lesion was found in the left petrous ridge and near-total resection was performed. Pathologic examination showed anaplastic hemangiopericytoma (World Health Organization Grade III). Hemangiopericytoma is an uncommon mesenchymal tumor that rarely occurs in an intracranial location. Prior studies have reported a surprisingly high rate of late recurrence and extracranial metastases from intracranial hemangiopericytomas, including metastases to the lungs. Resection was followed by external beam radiation. The tumor recurred intracranially 6 and 13 years later and was treated with gamma knife stereotactic radiosurgery. At year 14, she noticed a lump in her neck and underwent parotidectomy for a mucoepidermoid carcinoma. This new diagnosis prompted a staging chest CT scan which showed a 4 mm right upper lobe lung nodule along with additional
