Kenan Bicakci

Role of granulocyte colony-stimulating factor in the treatment of mucormycosis

Several problems in the management of life-threatening mucormycosis remain unresolved, necessitating new methods of management. Four patients with histopathologically proven rhinocerebral mucormycosis were treated with high cumulative doses of granulocyte colony-stimulating factor (G-CSF). All had multiple predisposing factors for mucormycosis, particularly leukemia and neutropenia. Two patients refractory to fluconazole therapy were treated with liposomal amphotericin B. The improvement in clinical manifestations was closely related to neutrophil recovery, and all patients were alive at the end of therapy. In addition to surgical debridement and antifungal therapy, G-CSF seems to have played a role in their survival.

Hepatic endometrioma: a case report and review of the literature.

Abstract. Extrapelvic endometriosis is not uncommon but hepatic endometrioma is extremely rare. Ultrasound, CT and MR features of hepatic endometrioma are discussed and the literature is reviewed in this report.

Diffuse Cavernous Hemangioma of the Rectum and Sigmoid Colon

We present an 18-year-old man with painless rectal bleeding, hematuria and diffuse cavernous hemangioma of the rectum and sigmoid colon. Thirty units of blood were transfused during the interval preceding definitive surgery. Low anterior resection and partial cystectomy were performed. During the postoperative period no rectal bleeding occurred, but he died of massive intracerebral bleeding 10 months after the operation.

Dramatic response with capecitabine after cranial radiation to the brain parenchymal and leptomeningeal metastases from lung cancer.

It is known that the prognosis of Non Small Cell Lung Cancer with brain metastasis are very poor with a median survival of only a few months. Although some chemotherapeutic agents penetrate the blood brain barrier generally chemotherapy results are bad but efficiency may be better after radiotherapy. For this reason brain metastatic disease requires some efforts to improve the response rate. Here we reported a case with lung cancer metastatic to the brain and we discussed the good response to capecitabine after cranial radiotherapy (C).

Recurrent headache and MRI findings in systemic lupus erythematosus.

BACKGROUND Headache in patients with systemic lupus eryhtematosus (SLE) is considered a common neurological finding, although the relationship is unclear. Another obscure point is the relationship between headache and neuroradiologic findings in these patients. AIM In this study, we aimed to evaluate the correlation between headache characteristics and intracranial lesions in SLE patients. METHODS AND RESULTS Forty-eight SLE patients were chosen from those referred to our clinic depending on the American Collage of Rheumatology (ACR) criteria at the same time or after the diagnosis of SLE. Headache classification was done regarding the ICD-II criteria in the patients. Headache severity was assessed by visual analog scale (VAS), and subjects with VAS > or = 4 were included in the study. Patients were divided into two groups according to magnetic resonance imaging (MRI) findings: abnormal MRI (lesion positive) and normal MRI (lesion negative). On MRI, intracranial lesions were detected in 37.5% (n = 18) of the patients, and no lesion was found in 62.5% (n = 30). Headache characteristics were as tension type in 54.1% (n = 26) and migraine like in 39.6% (n = 19) of all patients. Imaging findings were mostly as periventricular and subcortical focal lesions, ranging from 3-22 mm in diameter. A significant correlation was found between abnormal MRI findings with advanced age and prolonged disease duration (p = 0.018, p = 0.016). CONCLUSIONS As a conclusion, a detailed neurologic evaluation and radiologic investigation, if necessary, should be performed in SLE patients with prolonged disease and advanced age, regardless of headache characteristics.

Estimation of the Ratio of Renal Artery Stenosis with Magnetic Resonance Angiography Using Parallel Imaging Technique in Suspected Renovascular Hypertension

Background: Renovascular hypertension, which may lead to end-stage renal failure, necessitates prompt diagnosis and medication. Although various diagnostic tools exist for evaluation of renal arteries, magnetic resonance angiography (MRA), with the improvement of hardware and software systems, has become a very promising technique in screening patients with suspected renal hypertension. In this study, we aimed to assess renal artery stenosis on MRA in patients with suspected renovascular disease using a parallel imaging technique which allows faster scanning with higher resolution. Methods: Eighty-four patients with hypertension underwent MRA and digital angiography. Results: MRA detected renal artery stenosis with a sensitivity rate ranging from 69.3 to 100% and specificity rate ranging from 85.7 to 96%. Conclusion: Contrast-enhanced MRA of renal arteries is very effective in the demonstration of renal artery stenoses and assessment of stenosis ratio. Furthermore, parallel imaging technology has improved this procedure by reducing the scan time. Renal MRA, as a diagnostic tool, can accurately direct patients with renovascular disease to intravascular treatment.

Determining the Level of the Dural Sac Tip: Magnetic Resonance Imaging in an Adult Population

Purpose: To determine the variation in the location of the dural sac (DS) in a living adult population and to correlate this position with age and sex. Material and Methods: T2-weighted, midline, sagittal, spin-echo magnetic resonance imaging (MRI) studies of 743 patients were assessed to identify the tip of the DS. This location was recorded in relation to the upper, middle, or lower third of the adjacent vertebral body or the adjacent intervertebral disk. Results: Frequency distribution for levels of termination of the DS on MRI demonstrated that the end of the DS was usually located at the upper one-third of S2 (25.2%). The mean level in females was also the upper one-third of S2 (26.5%) and in males the lower one-third of S2 (24.1%). The overall mean DS position was mostly at the upper one-third of S2. No significant differences in DS position were seen between male and female patients or with increasing age. Conclusion: It is important to know the possible range for the termination level of the DS when performing caudal anesthesia and craniospinal irradiation in some clinical situations. The distribution of DS location in a large adult population was shown to range from the L5-S1 intervertebral disk to the upper third of S3 vertebrae.

The Incidence and the Risk Factors of Silent Embolic Cerebral Infarction After Coronary Angiography and Percutaneous Coronary Interventions

Silent embolic cerebral infarction (SECI) is a major complication of coronary angiography (CAG) and percutaneous coronary intervention (PCI). Patients with stable coronary artery disease (CAD) who underwent CAG with or without PCI were recruited. Cerebral diffusion-weighted magnetic resonance imaging was performed for SECI within 24 hours. Clinical and angiographic characteristics were compared between patients with and without SECI. Silent embolic cerebral infarction occurred in 12 (12%) of the 101 patients. Age, total cholesterol, SYNTAX score (SS), and coronary artery bypass history were greater in the SECI(+) group (65 ± 10 vs 58 ± 11 years, P = .037; 223 ± 85 vs 173 ± 80 mg/dL, P = .048; 30.1 ± 2 vs 15 ± 3, P < .001; 4 [33.3%] vs 3 [3.3%], P = .005). The SECI was more common in the PCI group (8/24 vs 4/77, P = .01). On subanalysis, the SS was significantly higher in the SECI(+) patients in both the CAG and the PCI groups (29.3 ± 1.9 vs 15 ± 3, P < .01; 30.5 ± 1.9 vs 15.1 ± 3.2, P < .001, respectively). The risk of SECI after CAG and PCI increases with the complexity of CAD (represented by the SS). The SS is a predictor of the risk of SECI, a complication that should be considered more often after CAG.

Castleman-like reaction due to toxic substance ingestion

Castleman disease (CD) is an uncommon lymphoproliferative disorder with a unique histopathology. Generally diagnosis is not difficult for an experienced pathologist. However, not usually, some histopathological entities or tissue reactions may mimic CD. Here CD-like reaction due to toxic substance ingestion has been presented.

Benign rectal schwannoma

Abstract Schwannoma is a rare nerve sheath tumor which frequently occurs in the intracranial acoustic nerve and spinal nerves. It is extremely rare in the rectum. In this report, we present a case of benign rectal schwannoma with the findings of flouroscopy, computed tomography and magnetic resonance imaging.