1/9. MRI of cerebral alveolar echinococcosis. Cerebral alveolar echinococcosis is rare. We report a case with multiple intracranial masses which show cauliflower-like contrast enhancement pattern on MRI. The lesions originated from hepatic involvement with invasion of the inferior vena cava. ( info) |
2/9. Parasitic lesion of the insula suggesting cerebral sparganosis: case report. Cerebral sparganosis, a parasitic disease, rarely produces a chronic active inflammatory response in the brain. Clinically and radiographically the process may mimic a neoplasm. We report a 30-year-old man who underwent surgical exploration for a mass in the insular cortex. histology revealed a densely fibrotic mass heavily infiltrated with plasma cells and lymphocytes, in which were embedded parasitic forms consistent with sparganosis. We describe the MRI appearances and pathologic features. Intracranial mass lesions secondary to sparganosis must be considered in patients with a history of travel to endemic areas, especially asia. ( info) |
| A 36-year-old Korean man presented with a history of epilepsy. MR imaging of the brain revealed multiple conglomerated round nodules that were hypointense on both T1-and-T2 weighted images. These were located at the left temporal and occipital lobes and had surrounding encephalomalacia. CT scan confirmed the presence of large calcified nodules in the corresponding regions. These imaging findings were typical of chronic cerebral paragonimiasis.The clinical, CT and MR features of cerebral paragonimiasis are reviewed. ( info) |
4/9. Submandibular and intracranial hydatid cyst in an adolescent. OBJECTIVES: An unusual case of hydatid disease is reported. review of the pertinent literature did not reveal any hydatid disease located simultaneously in both the intracranial and submandibular glands. This is the first case with hydatid disease occurring in both locations at the same time. STUDY DESIGN: The case of an 18-year-old is presented; the symptoms, findings, methods of diagnosis, and our approach for treatment are discussed; and the literature is reviewed. RESULTS: The intracranial lesion was completely excised by left-sided frontoparietal craniotomy, and the mass in the right side of the submandibular gland was removed through a submandibular approach at the same session. The intact cyst was completely excised. Histological examination of both lesions confirmed the diagnosis of hydatid cyst by. Postoperative recovery was uneventful, and the patient was discharged on the seventh day. CONCLUSIONS: Hydatid cyst should be suspected during the evaluation of cervical masses, particularly in endemic regions. Hydatid disease infestations are best treated with complete excision of the intact cyst. ( info) |
| A 67-year-old Korean woman attended our hospital complaining of a severe headache. A brain computed tomography scan showed conglomerated, high-density, calcified nodules in the left temporo-occipito-parietal area and high-density subarachnoid hemorrhage in the basal cisterns. magnetic resonance imaging of the brain shows multiple conglomerated iso- or low-signal intensity round nodules with peripheral rim enhancement. She underwent craniotomies to clip the aneurysm and remove the calcified masses. paragonimus westermani eggs were identified in the calcified necrotic lesions. Results of parasitic examinations on the sputum and an enzyme-linked immunosorbent assay for P. westermani were all negative. The patient presented with headache and dizziness that had occurred for more than 30 years. She had not eaten freshwater crayfish or crabs. However, she had sometimes prepared raw crabs for several decades. overall, this case was diagnosed as chronic cerebral paragonimiasis, in which she may have been infected through the contamination of utensils during the preparation of the second intermediate hosts, combined with a cerebral hemorrhage. ( info) |
6/9. Report of diffusion-weighted MRI in two cases with different cerebral hydatid disease. PURPOSE: To present MRI findings in two cases of cerebral hydatid disease with an emphasis on diffusion-weighted imaging (DWI) findings of echinococcus granulosus (EG) versus Echinococcus alveolaris (EA). RESULTS: EG lesions were isointense with cerebrospinal fluid in all sequences including DWI. On DWI, EA lesions remained hypointense on b = 1000 s/mm2 diffusion-weighted images. Apparent diffusion coefficient (ADC) values of EG and EA lesions were completely different from each other, 2.88 /- 0.24 x 10(-3) s/mm2 and 1.33 /- 0.15 x 10(-3) s/mm2, respectively. CONCLUSION: The ADC values could not be used to discriminate from other differential diagnoses. ( info) |
7/9. Multiple organ involvement hydatid cysts in a 2-year-old boy. The cerebral hydatid cysts caused by echinococcus granulosus are rare and occur mostly during childhood in endemic areas. A 2-year-old boy was admitted with focal neurological signs in the left extremities. magnetic resonance imaging of the brain showed a cyst lying from right parietooccipital region to the lateral ventricle. There were also multiple cysts in his lung and liver. The cerebral hydatid cyst was surgically extracted without complications. We suggest that a differential diagnosis of hydatid cyst should be considered when a brain mass is found in a patient, even 2 years old, from an endemic area of echinococcosis. ( info) |
8/9. Secondary infection of intracranial hydatid cyst with clostridium ramosum. INTRODUCTION: brain involvement in hydatid disease occurs in 1-2% of all echinococcus granulosus infections. Secondary infection of intracranial hydatid cysts is extremely rare. CASE REPORT AND DISCUSSION: In this case report, we present a secondary infection of an intracranial hydatid cyst due to clostridium ramosum, which is an extremely rare infectious pathogen in neurosurgical practice, and a potential pitfall in neuroradiological investigations. ( info) |
9/9. Cerebral alveolar echinoccosis mimicking primary brain tumor. We present a case of cerebral infestation by echinococcosis multilocularis mimicking an infiltrative primary brain tumor. A heavily calcified mass invading the midbrain enhanced in a cauliflower-like fashion with small peripheral nodules present on MR imaging. perfusion-weighted MR imaging revealed low relative cerebral blood volume within the calcified lesion and peripheral hyperemia. Single-voxel proton MR spectroscopy with an echo time of 135 milliseconds was normal. ( info) |