title: Orbital dermoid cyst with intratumoral inflammatory hemorrhage: case report.
abstract: An 85-year-old female presented with a 3-month history of worsening hyperlacrimation and blurred vision following blunt head injury. Her past medical history was unremarkable. Her blood examination identified no abnormal findings. Neuroophthalmological inspection revealed extraocular movement disorder and mild exophthalmos on the affected side. Her visual acuity was not disturbed. Neuroimaging showed a cystic mass located extraconally in the superolateral compartment of the anterior orbit, without enhancement by contrast medium. Surgical exploration resulted in escape of chocolate-colored, liquefied hematoma during dissection. No vascular lesion was found. A grayish-white cyst wall was found adhering strongly to the lateral and superior rectus muscles. The lacrimal gland was not identified. The mass was totally resected. Histological examination indicated dermoid cyst with inflammatory interstitial hemorrhage. No component of vascular malformation or atypia was found. Hyperlacrimation and extraocular movement improved postoperatively. We thought that the previous blunt head injury might have induced intratumoral hemorrhage in the preexisting dermoid cyst and that the escaped contents caused inflammatory irritation, resulting in the hyperlacrimation. Dermoid cyst may show atypical presentation with intratumoral hemorrhage and should always be included in the differential diagnosis of orbital tumor.
authors: Department of Neurological Surgery, Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan.
authors: Kentaro
authors: K
authors: Kudo
authors: Satoshi
authors: S
authors: Tsutsumi
authors: Yasuo
authors: Y
authors: Suga
authors: Hidehiro
authors: H
authors: Okura
authors: Yusuke
authors: Y
authors: Abe
authors: Yukimasa
authors: Y
authors: Yasumoto
authors: Masanori
authors: M
authors: Ito
mesh_terms: D000369:Aged, 80 and over; D003884:Dermoid Cyst / Q000150:complications / Q000473:pathology*; D005260:Female; D016489:Head Injuries, Closed / Q000150:complications; D006470:Hemorrhage / Q000209:etiology / Q000473:pathology*; D006801:Humans; D007249:Inflammation / Q000209:etiology / Q000473:pathology*; D007765:Lacrimal Apparatus / Q000293:injuries / Q000503:physiopathology; D007766:Lacrimal Apparatus Diseases / Q000209:etiology; D008279:Magnetic Resonance Imaging; D009801:Oculomotor Muscles / Q000293:injuries / Q000503:physiopathology; D009880:Ophthalmic Artery / Q000473:pathology* / Q000503:physiopathology; D013508:Ophthalmologic Surgical Procedures; D009915:Orbit / Q000098:blood supply / Q000000981:diagnostic imaging / Q000473:pathology*; D009918:Orbital Neoplasms / Q000150:complications / Q000473:pathology* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome