Ictal Coprolalia: Three Cases with Nondominat Frontal Lobe Involvement and Review of the Literature.

Objective: Coprolalia is defined as the involuntary use of obscene, socially unacceptable, and derogatory words. Ictal coprolalia is a rare presentation of epilepsy. This study aimed to determine the localizing and lateralizing value and frequency of ictal coprolalia in epilepsy patients. Methods: Medical files, discharge summaries, and electroencephalography (EEG) reports of 2238 patients were reviewed retrospectively. We identified patients who suffered from ictal coprolalia. Electroencephalography reports, neuroimaging [brain magnetic resonance imaging (MRI), fluorodeoxyglucose positron emission tomography (FDG-PET), single-photon emission computerized tomography (SPECT)] records, F-18 FDG fused on MRI images, and ictal SPECT fused on MRI images were evaluated. Also, original and review articles were identified through a systematic search of Pubmed, Scopus, and Clarivate Analytics. Results: Ictal coprolalia was detected in 3 male (0.15%) patients. In all patients, ictal semiology was extratemporal-frontal type, and potential/proven epileptic focus was non-dominant hemisphere frontal lobe. Topectomy was done in one of the patients, including the suspected dysplastic area plus the area where the electroencephalographic ictal and interictal changes occur, on the left frontal lobe, and the patient had an Engel's classification class IIA. The data depending on the published cases showed that ictal coprolalia was dominant in the male gender and the responsible epileptic area tended to be located in the non-dominant hemisphere frontotemporal region. Conclusion: The rate of ictal coprolalia in the Turkish population is lower compared to other series. Our results are consistent with previous studies in which reported that male preponderance for ictal coprolalia and involvement of non-dominant frontal lobe.

A rare involvement in skin cancer: Merkel cell carcinoma with bone marrow infiltration in a kidney transplant recipient.

A 60-year-old man presented with a painless, rapidly growing, haemorrhagic pink nodule on the posterior of his thigh that had developed 1 month previously. He had a diagnosis of IgA nephropathy and had received a renal allograft 7 years before. An excisional biopsy was performed and the diagnosis of Merkel cell carcinoma (MCC) was made. No distant metastases was detected. 10 months after first presentation, due to the development of acute pancytopenia and concomitant FDG PET/CT findings compatible with disease progression, bone marrow biopsy was performed which revealed metastasis of MCC. Dermatologists and oncologists should be aware that MCC could potentially involve the bone marrow in organ transplant recipients. In the follow-up period, a complete blood count should be carried out; FDG PET/CT can be obtained to follow up the metabolic status of the disease and bone marrow biopsy should be performed if necessary.

Lesional resective epilepsy surgery in childhood: Comparison of two decades and long-term seizure outcome from a single center.

OBJECTIVE: Epilepsy surgery has shown efficacy in children. We aimed to assess long-term seizure outcome in children who underwent epilepsy surgery and determine predictive factors for seizure freedom. METHODS: This is a retrospective study of 196 children who underwent epilepsy surgery between 1994 and 2015 and had a minimum postoperative follow-up of 5 years. RESULTS: The median age at the time of surgery was 9.5 (0.08-19.8) years; 110 (56.1%) had temporal, 62 (31.6%) had extratemporal resections, and 24 (12.2%) had hemispheric surgery. The duration of postsurgical follow-up was between 5 and 20 years (mean±SD: 7 ± 3.2). Overall, 129 of 196 (65.8%) patients had Engel class I outcome at final visit. Among patients who underwent temporal, extratemporal and hemispheric surgery; 84 of 110 (76.4%), 34 of 62 (54.8%), and 11 of 24 (45.8%) patients had complete seizure freedom, respectively (p: 0.016). Patients with tumors had the best outcome, with 83.1% seizure freedom. The number of preoperative antiseizure medications (OR 3.19, 95% CI 1.07-9.48), the absence of postoperative focal epileptiform discharges (OR 8.98, 95% CI 4.07-19.79) were independent predictors of seizure freedom. Across two decades, the age at surgery was decreased (p: 0.003), overall seizure freedom (61.8% vs 68%) did not differ. In the past decade, a higher proportion of malformations of cortical development was operated (14.7% vs 35.9%, p: 0.007). SIGNIFICANCE: Our findings showed favorable long-term seizure outcome in children who underwent epilepsy surgery. The results are encouraging for developing centers with limited resources to establish pediatric epilepsy programs.

SPECT-PET in Epilepsy and Clinical Approach in Evaluation.

In epilepsy, a detailed history, blood chemistry, routine electroencephalography, and brain MRI are important for the diagnosis of seizure type or epilepsy syndrome for the decision of appropriate drug treatment. Although antiepileptic drugs are mostly successful for controlling epileptic seizures, 20%-30% patients are resistant to medical treatment and continue to have seizures. In this intractable patient group, surgical resection is the primarily preferred treatment option. This particular group of patients should be referred to the epilepsy center for detailed investigation and further treatment. When the results of electroencephalography, MRI, and clinical status are discordant or there is no structural lesion on MRI, ictal-periictal SPECT, and interictal PET play key roles for lateralization or localization of epileptic region and guidance for the subsequent subdural electrode placement in intractable epilepsy. SPECT and PET show the functional status of the brain. SPECT and PET play important roles in the evaluation of epilepsy sydromes in childhood by showing abnormal brain regions. Most of the experience has been gained with (18)FDG-PET, in this respect. (11)C-flumazenil-PET usually deliniates the seizure focus more smaller than (18)FDG-PET and is sensitive in identifying medial temporal sclerosis. (11)C-alpha-methyl-l-tryptophan is helpful in the differentiation of epileptogenic and nonepileptogenic regions in children especially in tuberous sclerosis and multifocal cortical dysplasia for the evaluation of surgery. Finally, when there is concordance among these detailed investigations, resective surgery or palliative procedures can be discussed individually.

The seizure semiology consistent with frontal lobe symptomatogenic zone in children.

The aim of this study is to analyze the seizure semiology consistent with frontal lobe symptomatogenic zone in childhood. We analyzed 549 videotaped seizures from 79 patients (mean age 9.9 ± 3.8 years). Magnetic resonance imaging was normal in 30 patients. The seizures in the time interval of 10 p.m. to 6 a.m. were considered as nocturnal. The mean number of seizures per patient was 6.8 ± 7.3. The mean seizure duration was 25.7 ± 26.9 sec; postictal confusion was 27 ± 16.1 sec (7-92 seconds). The seizures were observed in sleep with a rate of 56.8%; 43.1% of them were during wakefulness. Overall 50.4% of the seizures occured during night-time sleep. Tonic seizure (77.2%) was the most frequent simple motor seizure. Versive seizures were the second most frequent type of simple motor seizure (26.7%). Clonic seizures were 17.7%, complex motor seizures were 20.5%, and dialeptic seizures were 3% of all the seizures. Epileptic spasm, myoclonic seizures, aphasia, and akinetic semiologies were not observed. Vocalization was observed in 16% of the seizures. Frontal lobe seizures in childhood have a short duration, occur frequently, especially during night time sleep, and have a brief postictal period. Tonic semiology, versive semiology are the most frequent seizure semiologies; hypermotor and secondary generalized tonic clonic seizures and vocalizations are observed less in children compared to adults.

Reflex Seizures Triggered by Exposure to Characters With Numerical Value: A Case With Right Temporal Cortical Dysplasia.

Reflex seizures can be triggered by a variety of stimuli. We present a case with drug-resistant complex partial seizures originating in right temporal lobe triggered extensively by visual, auditory, and mental exposure to multidigit numbers. The patient was investigated in video-EEG monitoring unit and seizures were triggered by numerical stimuli. Scalp EEG findings suggested a right temporal focus but ictal semiological findings suspicious for an extratemporal area necessitated the invasive EEG study. A right anterior temporal seizure focus was established with invasive monitoring and cortical stimulation studies. Magnetic resonance imaging showed a cortical dysplasia in right anterior temporal lobe and ictal single-photon emission computed tomography confirmed the epileptogenic focus, leading to a right temporal lobectomy and amygdalohippocampectomy and a pathological diagnosis of focal cortical dysplasia type Ia. The patient is seizure-free at the end of the second postoperative year despite repeated exposures to numbers. To our knowledge, this is the first report of seizures triggered by numbers. It is also of particular importance as the reflex seizures are associated with a cortical lesion and it may suggest involvement of right anterior temporal lobe in numerical processing.

Lacrimation as an Ictal Autonomic Event in a Patient With Seizures Originating From the Right Hemisphere.

In dacrystic seizures lacrimation has previously been reported as an ictal autonomic event accompanying emotional and somatic signs. However, it has not been observed as an isolated event in autonomic seizures. We report a patient experiencing complex partial seizures characterized by lacrimation as the initial and most prominent ictal event, with no sign of crying. The patient's ictal electroencephalogram (EEG) suggested a focus in the right hemisphere, along with interictal single-photon emission computed tomographic (SPECT) and positron emission tomographic (PET) studies demonstrating hypoperfusion-hypometabolism in the right temporoparietal lobe. Magnetic resonance imaging (MRI) did not show any structural abnormalities. Involvement of the temporal lobe has been suggested for dacrystic seizures, and both dominant and nondominant hemispheric foci were detected in such cases. Therefore, partially in concordance with previous reports, our case may point to neurobiologic interaction, between the temporoparietal region and the hypothalamus, for mediating lacrimation.

Leptin promoter G-2548A genotypes and associated serum leptin levels in childhood acute leukemia at diagnosis and under high-dose steroid therapy.

Genotype/allele distributions of leptin promoter G-2548A polymorphism, serum leptin and insulin levels and body weight were not significantly different between 72 children (39 male/33 female; age range 1.08-16, median 6 years) with acute leukemia (56 acute lymphoblastic leukemia [ALL]/16 acute non-lymphoblastic leukemia [ANLL]) at diagnosis and 70 age- and sex-matched controls (p > 0.05). The - 2548GG genotype was associated with the highest leptin levels in controls and patients with acute leukemia after 7-day high-dose methylprednisolone (HDMP) therapy (p < 0.05), while no significant association of genotype with leptin levels was detected in patients at diagnosis (p > 0.05). One-week HDMP therapy in patients carrying the - 2548G allele caused a significant increase in leptin levels and body weight (p < 0.001), whereas increases in those carrying the - 2548AA genotype were insignificant (p > 0.05). Decreases in white blood cell counts of patients after therapy were insignificant in - 2548GG (p > 0.05) yet significant in - 2548GA and - 2548AA (p < 0.05) genotypes. These results revealed no association of leptin genotype with the etiology of childhood acute leukemia but a possible association with leptin levels and effects of HDMP therapy.

The role of metamizol induction for the detection of perfusion reversibility on thallium-201 myocardial perfusion scintigraphy.

OBJECTIVE: Metamizol, probably with its vascular smooth muscle relaxant effect, enhances rest myocardial perfusion with the use of technetium-99m-methoxyisobutylisonitrile. We aimed to investigate whether metamizol induction is also able to increase the detectability of the ischemic/jeopardized myocardium during thallium-201 myocardial perfusion scintigraphy (MPS). METHODS: Twenty patients who had partially reversible/irreversible perfusion defects on their routine stress-redistribution-reinjection thallium-201 MPS were enrolled and metamizol-induced thallium-201 MPS (111 MBq thallium-201 was injected 45 min after 1 g oral metamizol) was acquired (10 min, 1 and 3 h later). Routine MPS and metamizol-induced MPS images were interpreted on the model of 17 segments using a visual uptake score (VUS; 0=normal, 1=mild, 2=moderate, 3=significant decreases, 4=no uptake). Thallium-201 uptake ratios (mean counts in the region of the perfusion defect/mean counts in the region of the normal-perfused wall) were calculated for each MPS. Blood pressure was monitored at 15-min intervals. MPS were compared with coronary angiography results. RESULTS: Visual uptake score and thallium-201 uptake ratio results indicated that in the first and third hour metamizol-induced thallium-201 uptake was significantly higher (P<0.001) than the redistribution/reinjection studies in 26 ischemic myocardial walls. Fourteen myocardial walls showed no thallium-201 uptake on either MPS and were considered as myocardial infarction. Statistically significant but asymptomatic decreases in blood pressure were observed. Coronary angiography results were in concordance with metamizol-induced MPS. CONCLUSION: Metamizol increases the detectability of ischemic/viable myocardium during MPS with thallium-201 and could be used with MPS.

Evaluation of SISCOM in routine regional cerebral blood flow alterations after clozapine, in schizophrenia.

Subtraction ictal single photon emission tomography (SPET) co-registered to magnetic resonance imaging (SISCOM) is an ictal-interictal brain perfusion SPET subtraction method, developed for evaluation of brain perfusion changes applied for the identification of epileptic foci. The aim of this study was to test whether regional cerebral blood flow (rCBF) alterations due to clozapine in schizophrenic patients could also be detected with SISCOM. We have studied the brain perfusion SPET data obtained both before (pre-SPET) and 8 weeks after (post-SPET) clozapine treatment, in 20 patients with schizophrenia. These data were used for SISCOM processing. In order to identify any alterations in the perfusion pattern using SISCOM, pre- and post-SPET data were subtracted from each other. Activation maps were created and merged on either pre- or post-SPET images. Visual interpretation of brain perfusion SPET studies were performed and compared with SISCOM findings. We found that final SISCOM images and visual evaluation of pre- and post-SPET studies were well concordant in 17/20 patients. Discordance was observed in 3 patients. In 1 of these 3 patients alterations observed with SISCOM were confirmed as subtle changes on visual re-evaluation of the images. In the remaining 2 of these 3 patients, SISCOM did not confirm the changes observed by visual analysis. Additionally, SISCOM depicted perfusion alteration in occipital cortex in 5 patients. In conclusion, the algorithm of SISCOM seemed to be useful and complementary to visual evaluation, to assess rCBF changes due to clopazine in outpatient schizophrenic patients who had treatment refractoriness or intolerance of previous antipsychotics and to provide additional information when both pre- and post-SPET data were subtracted from each other.

The role of Tc-99m dimercaptosuccinic acid renal cortical scintigraphy in acute and recurrent episodes of renal infarction in a patient with a tendency toward thrombosis.

Tc-99m dimercaptosuccinic acid (DMSA) renal cortical scintigraphy (RCS) of a 46-year-old man with abdominal and right flank pain who had history of a tendency toward thrombosis revealed extensive renal parenchymal changes secondary to renal infarction and a small size defect in the right kidney in addition to the patient's prior computed tomography results. The patient had Coumadin treatment. Two months later, he was referred to the hospital with the same symptoms. DMSA RCS established that the small defect in the right kidney had enlarged; other scarred areas persisted. This case indicates the value of DMSA RCS for early diagnosis, follow-up of acute/recurrent renal parenchymal scarring in patients with thrombophilia.

The effect of clozapine on regional cerebral blood flow and brain metabolite ratios in schizophrenia: relationship with treatment response.

The purpose of this study was to investigate the effect of clozapine on regional cerebral blood flow (rCBF) and its relationship with response to treatment. In addition, we aimed to study the influence of clozapine on proton magnetic resonance spectroscopy ((1)H-MRS) findings in the dorsolateral prefrontal cortex (DLPFC) in a subgroup of patients. Psychopathology, neurocognitive functioning, and SPECT imaging of 22 patients were assessed at the baseline and 8 weeks after the initiation of clozapine treatment. In 10 of these patients intermediate-echo (TE: 135 ms) single-voxel (1)H-MRS was also performed at the baseline and after 8 weeks. Clozapine treatment increased the right frontal (superior and medial)/caudate perfusion ratio in the whole group, while it increased bilateral frontal (superior and medial)/caudate perfusion ratios in treatment responders. In addition, percentage changes in left and right frontal (superior and medial)/caudate perfusion ratios compared to the baseline were higher in treatment responders than in non-responders. The improvement in attention was related to the increase in percentage change in the right frontal (superior and medial)/caudate perfusion ratio, while the improvement in verbal fluency was related to the increase in percentage changes in both right and left frontal (superior and medial)/caudate perfusion ratios and to right frontal (superior and medial)/thalamus perfusion. Baseline frontal (superior and medial)/thalamus perfusion could explain 32% of the variability of percentage improvements in psychopathology. (1)H-MRS showed that the baseline PANSS general psychopathology score was inversely correlated with the baseline NAA/Cre ratio. An increased NAA/Cre ratio in DLPFC after 8 weeks of clozapine treatment was also revealed by (1)H-MRS. Our SPECT imaging results suggest the presence of an imbalance in fronto-striato-thalamic circuitry that changes with clozapine, especially in the responders, while (1)H-MRS results indicate a supportive effect of clozapine on neuronal integrity.

99mTc sestamibi myocardial perfusion scintigraphy with the novel use of metamizol for the detection of perfusion reversibility.

PURPOSE: This study aims to investigate whether induction with metamizol, an analgesic-antipyretic drug having spasmolitic activity, could be used to increase the detectability of ischemic/jeopardized myocardium during MPS (myocardial perfusion scintigraphy). MATERIALS AND METHODS: Metamizol-enhanced rest MPS (45 min after administration of 1 g metamizol orally, 740 MBq (99m)Tc sestamibi was injected, MPS was acquired 45 min later) was performed in 21 patients who had perfusion defects on their previous stress-rest (99m)Tc sestamibi MPS. Blood pressure was monitored at 15-min intervals. Stress, rest, metamizol-rest MPS images were interpreted on the model of 20 segments using a visual uptake score (VUS; 0 = normal, 1 = mild, 2 = moderate, 3 = significant decreases, 4 = no uptake). (99m)Tc sestamibi uptake ratios (MIBI-UR; mean counts in the region of the perfusion defect/mean counts in the region of the normal-perfused wall) were obtained on each MPS and compared with each other. Average MIBI-UR in each scintigraphic examination was calculated. MPS were compared with coronary angiography results. RESULTS: VUS and MIBI-UR results showed that metamizol-rest MPS displayed the defect reversibility better than rest MPS. Of the 14 segments with fixed perfusion defects on stress-rest MPS, 8 showed improvement of perfusion after metamizol induction. In 33 segments, lesion reversibility was better delineated on metamizol-rest MPS. Metamizol-induced sestamibi uptake was significantly higher (p < 0.001) than stress/baseline rest examinations as calculated by the MIBI-UR. Blood pressure remained unaltered. Coronary angiography results were in concordance with metamizol induced MPS. CONCLUSIONS: Metamizol-enhanced rest MPS increases detectability of ischemic/viable myocardium during MPS. Metamizol should be discontinued like nitrates before stress MPS since it may mask the visualization of ischemic perfusion defects.

Ictal/interictal EEG patterns and functional neuroimaging findings in subcortical band heterotopia: report of three cases and review of the literature.

Subcortical band heterotopia (SBH) is a rare, genetic disorder of neuronal migration, which is seen almost exclusively in females. Little is known about the functionality of the band heterotopia, in terms of both physiology and pathology, in this malformation. Patients are reported to have several different types of seizures, which are usually drug resistant. Interictal EEG findings are known to correlate with the type of seizures, however less is known about the ictal EEG patterns. We present 3 female patients who were investigated at our center with video-scalp EEG monitoring, interictal single photon emission computed tomography (SPECT), functional magnetic resonance (MR) imaging (fMRI) and MR spectroscopy (MRS) besides routine MR imaging. They had several different types of seizures, and one of them reported also having circling seizures that have not been reported previously in patients with SBH. Ictal EEG recordings were remarkable for their unusual patterns of propagation. The findings in structural and functional neuroradiological investigations are discussed in light of the literature.

Unusual extracardiac findings detected on myocardial perfusion single photon emission computed tomography studies with Tc-99m sestamibi.

The authors describe the incidence and various uptake patterns of Tc-99m sestamibi (MIBI) in the extracardiac area due to unusual causes on myocardial perfusion single photon emission computed tomography (SPECT) studies. Seven patients are presented in whom incidental extracardiac findings were observed during the interpretation of the raw data besides the routine evaluation of myocardial reconstructed SPECT slices. These 7 patients were detected out of 582 consecutive patients (1.2%) who had myocardial perfusion SPECT with Tc-99m MIBI. The findings on the raw data led to additional reconstruction of thoracic SPECT images and eventually detailed examination of the extracardiac area. Two of the patients underwent surgery because of incidental extracardiac findings (thymoma and multinodular goiter) on cardiac scintigraphy. Other causes of increased extracardiac activity were the intestine protruded through the left hemithorax, uptake in the pulmonary arterial wall, and pulmonary interstitial fibrosis due to sarcoidosis. The reasons for decreased Tc-99m MIBI accumulation in the extracardiac area in the 2 other patients were significantly dilated pulmonary arteries and hydatic cyst, which were not defined before to our knowledge. Familiarity with the normal biodistribution and variable uptake patterns in the raw images becomes necessary during the interpretation of myocardial SPECT in order not to miss very unusual incidental extracardiac uptake or information that could lead to alteration in patient management. Potential underlying mechanisms of extracardiac Tc-99m MIBI accumulation are discussed, and the literature about noncardiac Tc-99m MIBI findings detected on myocardial perfusion SPECT studies was reviewed.

SPECT in periodic lateralized epileptiform discharges (PLEDs): a case report on PLEDs.

Periodic lateralized epileptiform discharges (PLEDs), which are known as unusual electroencephalogram (EEG) patterns, are described in a patient who had stroke and seizures. This patient underwent Tc-99m HMPAO (hexamethyl propylene amine oxime) brain single photon emission computed tomography (SPECT) imaging both during PLEDs on EEG and after the cessation of PLEDs. The initial SPECT study revealed increased CBF in the left frontal and parietal cortex extending through the left temporal region and in the left basal ganglium. After the PLEDs disappeared, the second SPECT study showed decreased perfusion on the left frontal and parietal region in the brain. Brain SPECT findings supported the contention that PLEDs may be an ictal phenomenon. Here we also present a review on PLEDs and contributions of brain SPECT as a functional imaging modality to investigate the underlying mechanism of this interesting EEG pattern.