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Traumatic sacral dermoid cyst rupture with intracranial subarachnoid seeding of lipid particles: illustrative case

Alexander Perdomo-Pantoja, Hesham Mostafa Zakaria, Brendan F. Judy, Jawad M. Khalifeh, Jose L. Porras, Tej D. Azad, Brian Y. Hwang, Timothy F. Witham, Chetan Bettegowda, and Nicholas Theodore

treated with antibiotics. † Surgery was intended, but the patient died of massive pulmonary embolus preoperatively. ‡ Hydrocephalus treated with ventriculoperitoneal shunt. § Meningism treated with analgesics. ¶ Hydrocephalus treated with third ventriculostomy. All 21 patients were adults; the mean age was 41.1 (standard deviation, 17.8) years, with a strong male predominance (7:1 ratio). The spinal dermoid cysts were mostly located in the lumbar spine (11 of 21 [52.4%]); others were located in the thoracolumbar (5 of 21 [23.8%]), sacral (3 of 21 [14

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Pineal parenchymal tumor of intermediate differentiation with late spinal dissemination 13 years after initial surgery: illustrative case

Hiroyuki Kato, Takafumi Tanei, Yusuke Nishimura, Yoshitaka Nagashima, Motonori Ishii, Tomoya Nishii, Nobuhisa Fukaya, Takashi Abe, and Ryuta Saito

intracranial PPTID. Illustrative Case A 14-year-old female presented with headache and diplopia. Bilateral papilledema and left eye abduction disorders were also observed. Magnetic resonance imaging (MRI) revealed a solitary mass lesion in the pineal region with contrast enhancement on T1-weighted imaging, which induced obstructive hydrocephalus ( Fig. 1 ). The patient had no relevant medical or family history. Initially, a biopsy of the lesion and endoscopic third ventriculostomy were performed. Histological examination revealed hypercellular proliferation, small