title: Concomitant intraventricular colloid cyst and low-grade astrocytoma of the brainstem in a 16-year-old boy.
abstract: Multiple primary brain tumors are commonly observed in patients with a history of brain radiation therapy or neurofibromatosis. The concomitant presence of 2 different types of brain tumors in a single location or chamber is a very rare clinical presentation in the absence of such a predisposing factor. The authors report on the case of a 16-year-old boy presenting with different types of brain tumors in 2 ventricular chambers concomitantly. This boy had a medium-sized colloid cyst of the third ventricle and a large fibrillary astrocytoma fungating from the brainstem into the floor of the fourth ventricle. The lesions were successfully excised in 2 separate surgeries. Radiotherapy was used as the adjuvant mode of therapy. There has been no sign of tumor recurrence after 16 months of follow-up. Clinical awareness and recognition of such a combination of tumors is important because they will dictate special treatment strategies depending on the individual biological aggressiveness of each tumor.
authors.affiliation: Department of Neurosurgery, Sina Hospital, Iran. abamirjamshidi@yahoo.com
authors.forename: Abbas
authors.initials: A
authors.lastname: Amirjamshidi
authors.forename: Rouzbeh Shams
authors.initials: RS
authors.lastname: Amiri
authors.forename: Maysam
authors.initials: M
authors.lastname: Alimohamadi
authors.forename: Kazem
authors.initials: K
authors.lastname: Abbassioun
mesh_terms: D000293:Adolescent; D001254:Astrocytoma / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D020295:Brain Stem Neoplasms / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D056364:Colloid Cysts / Q000150:complications / Q000175:diagnosis / Q000601:surgery; D003287:Contrast Media; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019635:Neurosurgical Procedures; D020542:Third Ventricle / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media