scholarly journals Salvage Laparoscopic-Assisted Anorectoplasty after Failed Vestibular Fistula Repair Using Magnetic Resonance Image Guidance

2019 ◽  
Vol 07 (01) ◽  
pp. e12-e15 ◽  
Author(s):  
Matthew W. Ralls ◽  
Brian P. Fallon ◽  
Maria Ladino-Torres ◽  
Peter F. Ehrlich ◽  
Marcus D. Jarboe
Keyword(s):  
Magnetic Resonance ◽  
Functional Outcomes ◽  
Image Guidance ◽  
Anorectal Surgery ◽  
Salvage Operation ◽  
Sphincter Complex ◽  
Vestibular Fistula ◽  
Magnetic Resonance Imaging Mri ◽  
Laparoscopic Assisted

AbstractPatients with vestibular fistula have a good functional outcome after posterior sagittal anorectoplasty (PSARP). While continence is often preserved, close follow-up and management of constipation are often required. Redo anorectal surgery has been associated with worse functional outcomes compared with primary procedures, possibly due to injury and scarring of the pelvic floor musculature and sphincter complex. Our group has a growing experience in the use of intraoperative real-time magnetic resonance imaging (MRI) for anorectal malformation repairs. We present a case of salvage operation of a failed PSARP for vestibular fistula.

Magnetic Resonance Imaging (MRI) Diagnosis of Fetal Corpus Callosum Abnormalities and Follow-up Analysis

2021 ◽  
pp. 088307382110162
Author(s):  
Xu Li ◽  
Qing Wang
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Corpus Callosum ◽  
Resonance Imaging ◽  
Neurodevelopmental Delay ◽  
Mri Diagnosis ◽  
Magnetic Resonance Imaging Mri ◽  
Lost To Follow Up ◽  
Singleton Pregnancies

Objectives: We analyzed the magnetic resonance imaging (MRI) manifestations of fetal corpus callosum abnormalities and discussed their prognosis based on the results of postnatal follow up. Methods: One hundred fifty-five fetuses were diagnosed with corpus callosum abnormalities by MRI at our hospital from 2004 to 2019. Gesell Development Scales were used to evaluate the prognosis of corpus callosum abnormalities after birth. Results: Corpus callosum abnormalities were diagnosed in 149 fetuses from singleton pregnancies, and 6 pairs of twins, 1 in each pair is a corpus callosum abnormality. Twenty-seven cases (27/155) were lost to follow up, whereas 128 cases (128/155) were followed up. Of these, 101 cases were induced for labor, whereas 27 cases were born naturally. Among the 27 cases of corpus callosum abnormality after birth, 22 cases were from singleton pregnancies (22/27). Moreover, 1 twin from each of 5 pairs of twins (5/27) demonstrated corpus callosum abnormalities. The average Gesell Development Scale score was 87.1 in 19 cases of agenesis of the corpus callosum and 74.9 in 3 cases of hypoplasia of the corpus callosum. Among the 5 affected twins, 2 had severe neurodevelopmental delay, 2 had mild neurodevelopmental delay, and 1 was premature and died. Conclusion: The overall prognosis of agenesis of the corpus callosum is good in singleton pregnancies. Hypoplasia of the corpus callosum is often observed with other abnormalities, and the development quotient of hypoplasia of the corpus callosum is lower compared with agenesis of the corpus callosum. Corpus callosum abnormalities may occur in one twin, in whom the risk may be increased.

scholarly journals Bone marrow abnormalities detected by magnetic resonance imaging as initial sign of hematologic malignancies

2018 ◽  
Author(s):  
Ida Sofie Grønningsæter ◽  
Aymen Bushra Ahmed ◽  
Nils Vetti ◽  
Silje Johansen ◽  
Øystein Bruserud ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Case Reports ◽  
Cell Types ◽  
Hematologic Malignancies ◽  
Resonance Imaging ◽  
Initial Sign ◽  
Magnetic Resonance Imaging Mri

The increasing use of radiological examination, especially magnetic resonance imaging (MRI), will probably increase the risk of unintended discovery of bone marrow abnormalities in patients where a hematologic disease would not be expected. In this paper we present four patients with different hematologic malignancies of nonplasma cell types. In all patients the MRI bone marrow abnormalities represent an initial presentation of the disease. These case reports illustrate the importance of a careful diagnostic follow-up without delay of patients with MRI bone marrow abnormalities, because such abnormalities can represent the first sign of both acute promyelocytic leukemia as well as other variants of acute leukemia.

scholarly journals Computed Tomography Perfusion, Magnetic Resonance Imaging, and Histopathological Findings After Laparoscopic Renal Cryoablation: An In Vivo Pig Model

2016 ◽  
Vol 16 (4) ◽  
pp. 406-413 ◽  
Author(s):  
Tommy Kjærgaard Nielsen ◽  
Øyvind Østraat ◽  
Ole Graumann ◽  
Bodil Ginnerup Pedersen ◽  
Gratien Andersen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Central Zone ◽  
Peripheral Zone ◽  
Scar Tissue ◽  
Resonance Imaging ◽  
Computed Tomography Perfusion ◽  
Laparoscopic Assisted

The present study investigates how computed tomography perfusion scans and magnetic resonance imaging correlates with the histopathological alterations in renal tissue after cryoablation. A total of 15 pigs were subjected to laparoscopic-assisted cryoablation on both kidneys. After intervention, each animal was randomized to a postoperative follow-up period of 1, 2, or 4 weeks, after which computed tomography perfusion and magnetic resonance imaging scans were performed. Immediately after imaging, open bilateral nephrectomy was performed allowing for histopathological examination of the cryolesions. On computed tomography perfusion and magnetic resonance imaging examinations, rim enhancement was observed in the transition zone of the cryolesion 1week after laparoscopic-assisted cryoablation. This rim enhancement was found to subside after 2 and 4 weeks of follow-up, which was consistent with the microscopic examinations revealing of fibrotic scar tissue formation in the peripheral zone of the cryolesion. On T2 magnetic resonance imaging sequences, a thin hypointense rim surrounded the cryolesion, separating it from the adjacent renal parenchyma. Microscopic examinations revealed hemorrhage and later hemosiderin located in the peripheral zone. No nodular or diffuse contrast enhancement was found in the central zone of the cryolesions at any follow-up stage on neither computed tomography perfusion nor magnetic resonance imaging. On microscopic examinations, the central zone was found to consist of coagulative necrosis 1 week after laparoscopic-assisted cryoablation, which was partially replaced by fibrotic scar tissue 4 weeks following laparoscopic-assisted cryoablation. Both computed tomography perfusion and magnetic resonance imaging found the renal collecting system to be involved at all 3 stages of follow-up, but on microscopic examination, the urothelium was found to be intact in all cases. In conclusion, cryoablation effectively destroyed renal parenchyma, leaving the urothelium intact. Both computed tomography perfusion and magnetic resonance imaging reflect the microscopic findings but with some differences, especially regarding the peripheral zone. Magnetic resonance imaging seems an attractive modality for early postoperative follow-up.

Bilateral Macrostomia Associated with Aqueductal Stenosis and Glial Heterotopias

2007 ◽  
Vol 44 (5) ◽  
pp. 558-561
Author(s):  
Ernesto Pepe ◽  
Paola Petricig ◽  
Paola Peretta ◽  
Giuseppe Cinalli
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prenatal Diagnosis ◽  
Magnetic Resonance ◽  
Aqueductal Stenosis ◽  
Resonance Imaging ◽  
Facial Anomalies ◽  
Magnetic Resonance Imaging Mri ◽  
Triventricular Hydrocephalus ◽  
Glial Heterotopia

We report on an Italian boy, born to normal and nonconsanguineous parents with a prenatal diagnosis of ventriculomegaly and subependymal glial heterotopias. At birth bilateral macrostomia was diagnosed without other evident facial anomalies. Magnetic resonance imaging (MRI) showed triventricular hydrocephalus and aqueductal stenosis and confirmed the nodules of glial heterotopia. The bilateral macrostomia was surgically corrected with the vermilion square flap method and W-plasty technique and follow up MRI at 6 months showed mild increase of ventricular dilatation without signs of active hydrocephalus. The association between macrostomia and hydrocephalus has been reported only in rare cases of complex malformative syndromes but never with isolated macrostomia.

Stereoelectroencephalography-Guided Laser Ablations in Patients With Neocortical Pharmacoresistant Focal Epilepsy: Concept and Operative Technique

2018 ◽  
Vol 15 (6) ◽  
pp. 656-663 ◽  
Author(s):  
Louis Ross ◽  
Ahsan M Naduvil ◽  
Juan C Bulacio ◽  
Imad M Najm ◽  
Jorge A Gonzalez-Martinez
Keyword(s):  
Laser Ablation ◽  
Magnetic Resonance ◽  
Thermal Imaging ◽  
Radiation Necrosis ◽  
Focal Epilepsy ◽  
Magnetic Resonance Images ◽  
The Novel ◽  
Metastatic Brain Tumors ◽  
Magnetic Resonance Imaging Mri

Abstract BACKGROUND Laser ablation surgery has had encouraging results in the treatment of multiple intracranial diseases including primary and metastatic brain tumors, radiation necrosis, and epilepsy. The use of the stereoelectroencephalography (SEEG) method in combination with laser thermocoagulation therapy with the goal of modulating epileptic networks in patients with neocortical nonlesional phamacoresistant epilepsy has not been previously described. OBJECTIVE To describe the novel methodological and conceptual aspects related to SEEG-guided laser ablations in patients with magnetic resonance imaging (MRI)-negative pharmacoresistant neocortical focal epilepsy. METHODS Guided by previous SEEG intracranial data, a laser ablation probe was inserted by using a robotic guidance device in a 17-yr-old medically refractory epilepsy patient with difficult to localize seizures and nonlesional MRI. The laser applicator position was confirmed by MRI, targeting the left mesial rostral superior frontal gyrus. The ablation was performed under multiplanar digital imaging views and real-time thermal imaging and treatment estimates in each plane. A postablation MRI (contrasted T1 sequence) confirmed the ablation's location and size. RESULTS The entire procedure was achieved in approximately 100 min. The actual ablation was performed in less than 3 min. Approximately, additional 30 min preoperatively were used for positioning and robot registration. Precise placement of laser application (in comparison with preplanned trajectories) was achieved using the robotic guidance and confirmed by the intraoperative magnetic resonance images. No complications were reported. The patient has been seizure-free since surgery. The follow-up period is 20 mo. Two additional patients, treated with similar methodology, are also described. CONCLUSION The preliminary experience with the described method shows the feasibility of a unique combination of the SEEG methodology with laser thermocoagulation in patients with neocortical MRI-negative pharmacoresistant focal epilepsy.

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