Posterior Fossa Tuberculous Abscess Mimicking as Mass Lesions. MRI Features

2005 ◽  
Vol 18 (2) ◽  
pp. 180-184
Author(s):  
N.K. Bodhey ◽  
S. Purkayastha ◽  
A.K. Gupta
Keyword(s):  
Posterior Fossa ◽  
Mr Spectroscopy ◽  
Antituberculous Therapy ◽  
Mri Features ◽  
Tuberculous Lesion ◽  
Tuberculous Abscess ◽  
Neoplastic Lesions ◽  
Mass Lesions ◽  
The Brain ◽  
Lactate Peak

With rising incidences of immunosuppression including HIV infection and various other factors, a resurgence of tuberculosis has been observed. We herewith describe two cases of posterior fossa tuberculomas with presentation mimicking mass lesions. Tuberculomas in the brain are not uncommon in the developing countries. Although they can mimic neoplastic lesions, the early diagnosis of tuberculous lesion with MRI and MR spectroscopy results in prompt institution of antituberculous therapy. Hypointensity in T2-weighted sequence with ring enhancement and the presence of a prominent lipid-lactate peak on MR spectroscopy is highly suggestive of the tuberculous nature of the lesion.

TUBERCULOUS BRAINSTEM ABSCESS

Neurosurgery ◽  
2009 ◽  
Vol 65 (6) ◽  
pp. E1206-E1207 ◽  
Author(s):  
Yu-Gang Jiang ◽  
Jing Chen ◽  
Yong Peng
Keyword(s):  
Early Recognition ◽  
Rare Condition ◽  
Poor Response ◽  
Antituberculous Therapy ◽  
Adequate Treatment ◽  
Mortality And Morbidity ◽  
Vulnerable Patients ◽  
Tuberculous Abscess ◽  
The Right ◽  
Mass Lesions

Abstract OBJECTIVE Tuberculous brainstem abscess is a clinically rare condition with potentially high mortality and morbidity. We present this report to draw attention to the importance of early recognition and adequate treatment of tuberculous brainstem abscess. CLINICAL PRESENTATION A 24-year-old man complained of longstanding fever, headache, and weakness followed by development of progressive slurred speech and hemiparesis of the right extremities. Magnetic resonance imaging revealed a large thick-walled cystic lesion lying within the brainstem. INTERVENTION The patient demonstrated a remarkable clinical recovery after microsurgery combined with a course of antituberculous therapy. Microbiological and histological findings confirmed the diagnosis of a tuberculous abscess. CONCLUSION Despite its rarity, the tuberculous brainstem abscess must be considered in the differential diagnosis of cystic brainstem mass lesions in vulnerable patients. When confronted with progressing neurological deterioration and poor response to antituberculous therapy, stereotactic or microsurgical management should be considered. Microsurgical excision combined with a complete course of antituberculous therapy in our patient led to a good outcome.

Imaging pitfalls in paediatric posterior fossa neoplastic and non-neoplastic lesions

2021 ◽  
Author(s):  
S. Culleton ◽  
B. McKenna ◽  
L. Dixon ◽  
A. Taranath ◽  
O. Oztekin ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Neoplastic Lesions ◽  
Imaging Pitfalls

scholarly journals CTNI-03. IMAGING FEATURES OF LEPTOMENINGEAL METASTASES OF NON-SMALL CELL LUNG CANCER: A SINGLE-CENTER REAL-WORLD STUDY

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii41-ii41
Author(s):  
Junjie Zhen ◽  
Lei Wen ◽  
Shaoqun Li ◽  
Mingyao Lai ◽  
Changguo Shan ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Type A ◽  
Brain Parenchyma ◽  
Imaging Features ◽  
Type B ◽  
Type D ◽  
Mri Examination ◽  
Mri Features ◽  
Brain And Spinal Cord ◽  
The Brain

Abstract BACKGROUND According to EANO-ESMO clinical practice guidelines, the MRI findings of LM are divided into 4 types, namely linear enhancement (type A), nodular enhancement (type B), linear combined with nodular enhancement (type C), and sign of hydrocephalus (type D). METHODS The MRI features of brain and spinal cord in patients diagnosed with NSCLC-LM in Guangdong Sanjiu Brain Hospital from 2010 until 2019 were investigated, and then were classified into 4 types. The imaging features were analyzed. RESULTS A total of 80 patients were enrolled in the study. The median age of the patients was 53.5 years old, and the median time from the initial diagnosis to the confirmed diagnosis of LM was 11.6 months. The results of enhanced MRI examination of the brain in 79 cases showed that the number of cases with enhancements of type A, B, C and D were 50 (63.3%), 0, 26 (32.9%) and 3 (3.8%), respectively, and that LM with metastases to the brain parenchyma was found in 42 cases (53.2%). The results of enhanced MRI examination of spinal cord in 59 cases showed that there were only enhancements of type A and C in 40 cases (67.8%) and 3 cases (5.0%), and no enhancement sign in the other 16 cases (27.2%). CONCLUSION MRI examination of brain and spinal cord will improve the detection rate of LM. The MRI features of NSCLC-LM in real world are mainly characterized by the linear enhancements of brain and spinal cord, followed by linear combined with nodular enhancement. The enhancements of type B and type D are rare in clinic. Almost half of the patients have LM and metastases to the brain parenchyma. Therefore, the differentiation of tumor metastases is needed to be paid attention to for the early diagnosis and the formulation of reasonable treatment plans.

PHACES: a neurocutaneous syndrome with anomalies of the aorta and supraaortic vessels

2004 ◽  
Vol 14 (2) ◽  
pp. 206-209 ◽  
Author(s):  
Gerald Wendelin ◽  
Erwin Kitzmüller ◽  
Ulrike Salzer-Muhar
Keyword(s):  
Aortic Arch ◽  
Posterior Fossa ◽  
Coarctation Of The Aorta ◽  
Cardiac Defects ◽  
Vascular Abnormalities ◽  
Great Vessels ◽  
Neurocutaneous Syndrome ◽  
The Brain ◽  
Supraaortic Vessels ◽  
Arterial Anomalies

The acronym PHACES summarizes the most important manifestations of a rare neurocutaneous syndrome. Specifically, “P” accounts for malformation of the brain in the region of the posterior fossa, “H” stands for haemangiomas, “A” is for arterial anomalies, and “C” is for coarctation of the aorta along with cardiac defects, “E” is for abnormalities of the eye, and “S” for clefting of the sternum, and/or a supraumbilical abdominal raphe. Our objective is to introduce the syndrome to paediatric cardiologists. Our patient has stenosis of the aortic arch, multiple malformations of the great vessels arising from the aortic arch, intracranial vascular abnormalities, a sternal malformation with a supraumbilical raphe, and facial haemangiomas. We stress that it is important always to consider the existence of this syndrome in all patients with facial haemangiomas.

Arteriovenous malformations in the posterior fossa

1977 ◽  
Vol 47 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Hiroshi Matsumura ◽  
Yasumasa Makita ◽  
Kuniyuki Someda ◽  
Akinori Kondo
Keyword(s):  
Arteriovenous Malformation ◽  
Brain Stem ◽  
Posterior Fossa ◽  
Arteriovenous Malformations ◽  
Cerebellopontine Angle ◽  
Anterior Part ◽  
Content Type ◽  
The Brain ◽  
Fine Print

✓ We have operated on 12 of 14 cases of arteriovenous malformation (AVM) in the posterior fossa since 1968, with one death. The lesions were in the cerebellum in 10 cases (three anteromedial, one central, three lateral, and three posteromedial), and in the cerebellopontine angle in two; in two cases the lesions were directly related to the brain stem. The AVM's in the anterior part of the cerebellum were operated on through a transtentorial occipital approach.

Contribution of advanced MRI to the diagnosis of giant tumefactive perivascular spaces

2021 ◽  
pp. 028418512110472
Author(s):  
Veysel Ayyildiz ◽  
Ali Koksal ◽  
Onur Taydas ◽  
Hayri Ogul
Keyword(s):  
Mr Spectroscopy ◽  
Mr Angiography ◽  
Diffusion Tensor ◽  
Perivascular Spaces ◽  
Cerebral Lesions ◽  
Contrast Enhanced ◽  
Cerebral Mri ◽  
Mri Sequences ◽  
Perfusion Mr ◽  
Lactate Peak

Background Giant tumefactive perivascular spaces (PVSs) are uncommon benign cystic lesions. They can imitate cystic neoplasms. Purpose To evaluate the contribution of advanced neuro magnetic resonance imaging (MRI) techniques in the diagnosis of giant tumefactive PVSs and to further characterize these unusual cerebral lesions. Material and Methods The MRI scans of patients with tumefactive PVS diagnosed between 2010 and 2019 were retrospectively reviewed. All imaging studies included three plane conventional cerebral MRI sequences as well as precontrast 3D T1 MPRAGE, post-gadolinium 3D T1 acquisitions, sagittal plane 3D T2 SPACE, diffusion-weighted imaging, and time-of-flight (TOF) angiography. Some patients received perfusion MR, MR spectroscopy, diffusion tensor imaging (DTI), and contrast-enhanced TOF MR angiography. Results A perforating vessel was demonstrated in 16 patients (66.7%) by TOF imaging. In four patients, there were intracystic vascular collaterals on contrast-enhanced TOF MR angiography. Septal blooming was observed in four patients in susceptibility-weighted imaging. On perfusion MR, central hyperperfusion was observed in four patients, and peripheral hyperperfusion was observed in one patient. On MR spectroscopy, choline increase was observed in two patients, and there was a lactate peak in three patients, and both a choline increase and lactate peak in one patient. On DTI, there was fiber distortion in five patients and fiber deformation in one patient. Conclusion Advanced MRI techniques and 3D volumetric high-resolution MRI sequences can provide a valuable contribution to the diagnosis and can be successfully used in the management of these lesions.

Nonneoplastic Mass Lesions of the Brain

2020 ◽  
pp. 117-139
Author(s):  
Simon Nicolay ◽  
Luc Van Den Hauwe ◽  
Paul M. Parizel ◽  
Johan W. Van Goethem
Keyword(s):  
Mass Lesions ◽  
The Brain

scholarly journals Cerebellar Atrophy in Epileptic Patients

1988 ◽  
Vol 15 (3) ◽  
pp. 299-303 ◽  
Author(s):  
M.I. Botez ◽  
Ezzedine Attig ◽  
Jean Lorrain Vézina
Keyword(s):  
Statistical Analysis ◽  
High Resolution ◽  
Posterior Fossa ◽  
De Novo ◽  
Cerebellar Atrophy ◽  
Ct Scans ◽  
Control Subjects ◽  
Generalized Seizures ◽  
Epileptic Patients ◽  
The Brain

ABSTRACT:High-resolution CT scans of the brain and posterior fossa were performed on 106 phenytoin (PHT)- treated epileptics, 28 de novo epileptics and 43 control subjects. A higher incidence of cerebellar and brainstem (CBS) atrophy was observed in chronic PHT- or PHT+ phenobarbital-treated epileptics compared to the two other groups. Some control subjects and de novo epileptics presented mild CBS atrophy, whereas moderate to severe atrophy was noted exclusively in chronically-treated patients. In attempting to delineate the etiology of CBS atrophy, epileptic patients were divided in three groups: 55 subjects with normal CT scans, 30 with both cerebral and CBS atrophy, and 49 with pure CBS atrophy. Their ages, length of illness, number of generalized seizures, number of other seizures, and amount of PHT received during their lifetime were assessed. Statistical analysis revealed that posterior fossa atrophy in epileptics was significantly correlated with both the length of the illness and the amount of PHT ingested during the patient's lifetime. The number of seizures appears to not be related to CBS atrophy.

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