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Osteomas are benign bone tumors commonly involving paranasal sinus walls. They are divided into three groups as ivory, mature, and mixed form. We reported demonstrative radiological features of an unusual case of giant osteoma presenting with proptosis and diplopia.
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BACKGROUND: Brain herniation (BH) into arachnoid granulation has been remarkable in recent years. PURPOSE: To evaluate the damage in herniated parenchyma into the giant arachnoid granulation (GAG) and to investigate the clinical-demographic importance of this damage. MATERIAL AND METHODS: Patients with BH into GAG were retrospectively included in the study. Each of the patients had at least one high-resolution 3D magnetic resonance imaging (MRI) sequence. The arachnoid granulation dimensions, locations, and origin of herniated parenchyma were evaluated by two experienced radiologists. The demographic and symptomatic features of the patients were recorded from the hospital database. RESULTS: A total of 27 patients (21 females, 6 males; age range 6-71 years; mean age 41.3 years) were found to contain BH into GAG. It was most commonly seen in the transverse sinus (67%); the origin was most common in the cerebellar parenchyma (56%). Abnormal signal and morphology were detected in herniated parenchyma in 11 (47%) patients, atrophy in six, and atrophy and gliosis in five. The most common complaints were headache (47%), while other frequent symptoms were vertigo (15%) and blurred vision (11%). There was a statistically significant positive correlation between frequency of damage in herniated brain parenchyma and the maximal size of GAG (P<0.05). CONCLUSION: In patients with BH into GAG, parenchymal damage may be associated with various symptoms, such as headache and vertigo, although they have not been statistically proven. It is important to carefully evaluate hernia tissue, as the risk of tissue damage may increase in larger GAGs.
Assuntos
Aracnoide-Máter/diagnóstico por imagem , Encéfalo/patologia , Encefalocele/complicações , Encefalocele/diagnóstico por imagem , Tecido de Granulação/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Adolescente , Adulto , Idoso , Encéfalo/diagnóstico por imagem , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto JovemRESUMO
PURPOSE: To evaluate the contribution to the diagnosis of the giant arachnoid granulations (AGs) of three-dimensional (3D) high-resolution magnetic resonance (MR) imaging sequences such as T2-weighted sampling perfection with application optimized contrasts using different flip-angle evolution (SPACE) and post-contrast T1-weighted magnetization prepared rapid gradient echo (MPRAGE). MATERIALS AND METHODS: Patients with 45 giant AGs were included in this retrospective study. All the patients were performed 3D T2-weighted SPACE and contrast enhanced MR venography sequences, as well as conventional cerebral MR imaging sequences. Post-contrast T1 weighted MPRAGE sequence were performed on 38/45 patients. All cerebral MR examinations were reviewed by the 2 neuroradiologists. Each GA was evaluated carefully to assess location and mean diameter. RESULTS: The most common location for giant AGs was at both transverse sinuses. Fluid signal feature within the giant AGs was not isointense to CSF on SE T1 and FLAIR MR imaging in 32 of 45 giant AGs. There were cerebral herniation into AG in 10 (22.2 %) of 45 giant AGs. 33 (73.3 %) of 45 giant AGs had central vein finding into AG in contrast enhanced MR venography. Signal void phenomenon into AG in 3D T2-weighted SPACE MR sequence was identified in 28 (62.2 %) of 45 giant AGs. CONCLUSIONS: Fluid within giant AGs had no completely CSF-like signal intensity on conventional and 3D high-resolution MR imaging sequences. Majority of CSF-incongruent fluid within giant AGs on conventional sequences is mostly due to intra-AG CSF flow.
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Aracnoide-Máter/diagnóstico por imagem , Tecido de Granulação/diagnóstico por imagem , Imageamento Tridimensional/métodos , Imageamento por Ressonância Magnética/métodos , Adolescente , Adulto , Idoso , Aracnoide-Máter/anatomia & histologia , Criança , Diagnóstico Diferencial , Feminino , Tecido de Granulação/anatomia & histologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto JovemAssuntos
Tronco Encefálico , Encefalite/etiologia , Granulomatose com Poliangiite/complicações , Neurite Óptica/etiologia , Sinusite/etiologia , Adulto , Anticorpos Anticitoplasma de Neutrófilos/metabolismo , Biomarcadores/metabolismo , Encefalite/diagnóstico , Granulomatose com Poliangiite/diagnóstico , Humanos , Imageamento por Ressonância Magnética , Masculino , Neurite Óptica/diagnóstico , Sinusite/diagnósticoRESUMO
Arteriovenous malformations (AVMs) are basically abnormal vessel networks consisting of one or more feeding arteries, central nidus, and dilated drainage veins. They are divided into subtypes as fistulose, mixed (fistulose-plexiform), or plexiform. Intraventricular location of AVMs is unusual. In this location, the lesion may mimic neoplastic processes. Here the authors reported uncommon case of an AVM located in the right choroid plexus presenting with intraventricular hemorrhage.
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Neoplasias do Ventrículo Cerebral/diagnóstico , Plexo Corióideo/diagnóstico por imagem , Malformações Arteriovenosas Intracranianas/diagnóstico por imagem , Adulto , Hemorragia Cerebral/etiologia , Diagnóstico Diferencial , Feminino , Humanos , Malformações Arteriovenosas Intracranianas/complicaçõesAssuntos
Malformações Arteriovenosas/diagnóstico por imagem , Angiografia por Tomografia Computadorizada , Fígado/irrigação sanguínea , Pulmão/irrigação sanguínea , Telangiectasia Hemorrágica Hereditária/diagnóstico por imagem , Malformações Arteriovenosas/genética , Feminino , Humanos , Fígado/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Pessoa de Meia-IdadeRESUMO
Osteochondroma is the most common benign bone tumor, but it rarely arises from the scapula. Scapulothoracic bursitis is quite rare and osteochondroma is one of the unusual causes of this condition. Synovial chondromatosis may occur extremely uncommonly in this bursa. We reported an unusual case of scapulothoracic bursitis with synovial chondromatosis, which is caused by osteochondroma. To the best of our knowledge, there is no defined chondromatosis in the scapulothoracic bursa secondary to scapular osteochondroma in the literature.