title: Chronic paroxysmal headache secondary to an orbital metastatic leiomyosarcoma: A case report.
abstract: Background Intraorbital lesions associated with symptomatic trigeminal autonomic cephalalgias (TACs) are rarely reported. We present a case of orbital metastatic leiomyosarcoma, presenting with chronic paroxysmal hemicrania-like headache. Case report A 43-year-old man presented with a severe paroxysmal headache in his left periocular and frontal area for a year. The attacks occurred 10-12 times per day, lasting 10-15 minutes with ipsilateral lacrimation and conjunctival injection. Neurological examination and brain MRI without contrast were unremarkable. Different medications were tried, without beneficial effects. A follow-up contrast-enhanced brain MRI performed one year after the baseline MRI revealed an enhancing mass in the left superior oblique muscle. Orbital metastatic leiomyosarcoma arising from the thigh was revealed. He received gamma knife surgery, which completely resolved the headache. Discussion Intraorbital lesion should be considered a possibility in patients with headache mimicking TACs. Baseline contrast-enhanced MRI is essential, and repeated MRI scans might be needed if clinically indicated.
authors.affiliation: Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Hyun Ah
authors.initials: HA
authors.lastname: Choi
authors.affiliation: Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Mi Ji
authors.initials: MJ
authors.lastname: Lee
authors.affiliation: Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Chin-Sang
authors.initials: CS
authors.lastname: Chung
mesh_terms: D000328:Adult; D006801:Humans; D007890:Leiomyosarcoma / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary*; D008297:Male; D009918:Orbital Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary*; D051302:Paroxysmal Hemicrania / Q000000981:diagnostic imaging* / Q000209:etiology
keywords: Secondary trigeminal autonomic cephalalgias; orbital leiomyosarcoma; paroxysmal hemicrania