Search

Meningioma is the most common intracranial tumor affecting the skull base and the diagnosis is usually straightforward on imaging studies. However, other lesions can appear similar on imaging studies. A 60 year-old-man presented with non-specific neurological symptoms, including memory loss and behavioral changes. CT and MR imaging disclosed an extra-axial, dural-based lesion in the middle cranial fossa. The lesion was remarkable for its hypervascular nature with strong and early contrast enhancement, large peripheral flow voids and vasogenic edema of the adjacent brain parenchyma. Although the most common dural-based lesion of the CNS is the meningioma, radiologists should be aware of other differential diagnoses, particularly when facing atypical imaging features. These comprise metastases, lymphoma and leukemia, histiocytic lesions, sarcoidosis and hemangiopericytoma. These lesions have a significant impact on patient´s management. Based on imaging findings we were able to suggest the diagnosis of hemangiopericytoma and the patient was managed accordingly.O meningioma é o tumor intracraniano mais comum na base do crânio e o seu diagnóstico imagiológico é habitualmente claro, mas outras lesões podem apresentar-se com achados semelhantes.Um homem de 60 anos apresentou-se com perda de memória e alterações comportamentais. Efectuou Tomografia Computorizada (TC) e Ressonância Magnética (RM) de crânio que demonstraram uma lesão extra-axial de base dural na fossa média. A lesão possuía forte realce com natureza hipervascular, vasos periféricos e edema vasogénico do parênquima cerebral adjacente.Embora a lesão de base dural mais comum do sistema nervoso central (SNC) seja o meningioma, devem-se considerar outros diagnósticos diferenciais, particularmente na presença de características de imagem atípicas. Nestes incluem-se metástases, linfoma e leucemia, lesões histiocíticas, sarcoidose e hemangiopericitoma. Com base nos achados de imagem, sugerimos o diagnóstico de hemangiopericitoma e o doente foi sujeito a cirurgia de ressecção tumoral e radioterapia adjuvante, encontrando-se um pequeno resíduo tumoral estável nos estudos de seguimento., Meningioma is the most common intracranial tumor affecting the skull base and the diagnosis is usually straightforward on imaging studies. However, other lesions can appear similar on imaging studies. A 60 year-old-man presented with non-specific neurological symptoms, including memory loss and behavioral changes. CT and MR imaging disclosed an extra-axial, dural-based lesion in the middle cranial fossa. The lesion was remarkable for its hypervascular nature with strong and early contrast enhancement, large peripheral flow voids and vasogenic edema of the adjacent brain parenchyma. Although the most common dural-based lesion of the CNS is the meningioma, radiologists should be aware of other differential diagnoses, particularly when facing atypical imaging features. These comprise metastases, lymphoma and leukemia, histiocytic lesions, sarcoidosis and hemangiopericytoma. These lesions have a significant impact on patient´s management. Based on imaging findings we were able to suggest the diagnosis of hemangiopericytoma and the patient was managed accordingly.

Uma mulher de 75 anos apresentou queixas de dor abdominal vaga há três meses. Investigações laboratoriais de rotina não eram dignas de nota, exceto por leve anemia. O nível sérico de alfa-fetoproteína (AFP), o nível sérico de lactato desidrogenase (LDH) e os níveis séricos de antígeno carcinoembrionário (CEA) estavam dentro dos limites normais. Os testes de função hepática foram alterados, mostrando níveis elevados de alanina transferase, nível de transferase alcalina e fosfatase alcalina., Acta Radiológica Portuguesa, vol. 30 n.º 3 (2018)

Meningioma is the most common intracranial tumor affecting the skull base and the diagnosis is usually straightforward on imaging studies. However, other lesions can appear similar on imaging studies. A 60 year-old-man presented with non-specific neurological symptoms, including memory loss and behavioral changes. CT and MR imaging disclosed an extra-axial, dural-based lesion in the middle cranial fossa. The lesion was remarkable for its hypervascular nature with strong and early contrast enhancement, large peripheral flow voids and vasogenic edema of the adjacent brain parenchyma. Although the most common dural-based lesion of the CNS is the meningioma, radiologists should be aware of other differential diagnoses, particularly when facing atypical imaging features. These comprise metastases, lymphoma and leukemia, histiocytic lesions, sarcoidosis and hemangiopericytoma. These lesions have a significant impact on patient´s management. Based on imaging findings we were able to suggest the diagnosis of hemangiopericytoma and the patient was managed accordingly., Acta Radiológica Portuguesa, vol. 30 n.º 3 (2018)

Learning objectives Background Findings and procedure details Conclusion Personal information References, Learning objectives: -To review the mechanisms and causes of liver capsule retraction. -To review the differential diagnosis and key imaging findings for each condition. -To analyze possible mimickers and pitfalls of liver capsule...

Learning objectives Background Findings and procedure details Conclusion Personal information References, Learning objectives: To review the imaging aspects of the tibialis anterior muscle and tendon, focusing on: - Normal anatomy; - Muscle disorders; - Tendon abdormalities; - Bursal...

Learning objectives Background Findings and procedure details Conclusion Personal information References, Learning objectives: We will review several presentations of cerebral venous thrombosis, focusing on: - Imaging features in CT and MR; - Classical signs of diagnostic value; - Potential imaging pitfalls; - Key features for differential...

Learning objectives Background Imaging findings OR Procedure Details Conclusion References Personal Information, Learning objectives: To review the most important measurements in upper limb radiographic evaluation, including measurements for evaluation of the shoulder, elbow, wrist and hand...

Learning objectives Background Findings and procedure details Conclusion Personal information References, Learning objectives: To understand the range of imaging features of portal biliopathy, using a multimodality approach with pathologic correlation. To discuss the differential diagnosis with emphasis on key imaging points for a correct...

Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis, female, 77 years, Clinical History: A 77 year-old woman presented with a palpable and pulsatile neck mass, which had visible growth in the last 6 months. There was a history of hypertension and diabetes mellitus. There were no other signs or symptoms and no previous neck surgery or trauma. Final Diagnosis: Extracranial internal carotid artery aneurysm.