No abstract available.
Leydig Cell Tumor*

No abstract available.
Lymphoma, T-Cell* ; T-Lymphocytes*

Echocardiography and catheterization angiography suffer certain limitations in the evaluation of congenital heart diseases in adults, though these are overcome by MRI, in which a wide field-of view, unlimited multiplanar imaging capability and three-dimensional contrast-enhanced MR angiography techniques are used. In adults, recently introduced fast imaging techniques provide cardiac MR images of sufficient quality and with less artifacts. Ventricular volume, ejection fraction, and vascular flow measurements, including pressure gradients and pulmonary-to-systemic flow ratio, can be calculated or obtained using fast cine MRI, phase-contrast MR flow-velocity mapping, and semiautomatic analysis software. MRI is superior to echocardiography in diagnosing partial anomalous pulmonary venous connection, unroofed coronary sinus, anomalies of the pulmonary arteries, aorta and systemic veins, complex heart diseases, and postsurgical sequelae. Biventricular function is reliably evaluated with cine MRI after repair of tetralogy of Fallot, and Senning's and Mustard's operations. MRI has an important and growing role in the morphologic and functional assessment of congenital heart diseases in adolescents and adults.
Adolescent ; Adult ; Heart Defects, Congenital/*diagnosis ; Human ; *Magnetic Resonance Imaging ; *Magnetic Resonance Imaging, Cine ; Support, Non-U.S. Gov't

Fibrotic lesions occurring in the corpus cavernosum are usually cases of Peyronie's disease that originate from the tunica albuginea, or they are the fibrotic result of inflammatory processes. The lesion involving the corpus cavernosum, but not tunica albuginea is rare. We present here a case of fibrotic nodule arising in the corpus cavernosum with the sonographic and magnetic resonance imaging features. A 38-year-old man complained a small nodular mass in the left corpus cavernosum at the level of penoscrotal junction without abnormal curvature of the organ. We performed ultrasonography and magnetic resonance imaging to determine exactly what the lesion was. The lesion was removed and it was pathologically found to be a localized fibrotic nodule of the corpus cavernosum with some narrow-channeled vascular structures.
Adult ; Fibrosis ; Humans ; Magnetic Resonance Imaging ; Male ; Penile Induration ; Penis ; Ultrasonography

Benign primary headaches are common during the postpartum period. However, there are several other kinds of headaches caused by specific underlying pathologies like post-dural puncture headache (PDPH), pregnancy induced hypertension, cortical vein thrombosis, posterior reversible encephalopathy syndrome (PRES), subarachnoid hemorrhage, intracranial hemorrhage, brain tumor, and so on. These headaches are rare but each can be life threatening conditions when diagnosis is delayed. If a patient was treated for another type of headache, like a PDPH, the diagnosis would be even more difficult. We report on the case of a 24 year-old woman who suffered with PDPH followed by postpartum eclampsia with PRES.
Diagnosis ; Eclampsia ; Female ; Headache ; Humans ; Hypertension ; Hypertension, Pregnancy-Induced ; Intracranial Hemorrhages ; Pathology ; Post-Dural Puncture Headache ; Posterior Leukoencephalopathy Syndrome* ; Postpartum Period ; Pregnancy ; Seizures ; Subarachnoid Hemorrhage ; Thrombosis ; Veins

PURPOSE: The purpose of the present study was to develop and optimize solenoid coil for animal- model in 3 T MRI system and investigate and compare with the birdcage coil concerning the image quality with the various parameters such as SNR and Q-factor. MATERIALS AND METHODS: Solenoid coil for animal-model was made on the acryl structure (diameter 4 cm, length 10 cm) 3 times-winding cooper tape of width 2 cm , thickness 0.05 cm and length 10 cm with 2 cm interval between winded tapes. Capacitors from 2 pF to 100 pF were used, and the solenoid coil was designed for receiver only coil. RESULTS: SNR of the developed solenoid was 985 in CuSO4 0.7 g/L and 995 in rat experiment. Q-factor was 84-89 in unloaded condition and 203-206 in loaded condition. CONCLUSION: The resolution of the image obtained from solenoid was relatively higher than that of the conventional birdcage coil. In addition, the homogeneity of RF field by coil simulation was significantly excellent. The present study demonstrated that the solenoid coil could be useful to obtain small animal images with better contrast, resolution, visibility than images from birdcage.
Animals* ; Magnetic Fields* ; Magnetic Resonance Imaging* ; Rats ; Wind

BACKGROUND AND OBJECTIVES: Modern endoscopes provide a direct access into the hidden recesses of the middle ear using a minimally invasive approach. The authors employed endoscopes in a transcanal tympanoplasty and analyzed the results for the further application of these endoscopic procedures to various otologic surgeries. MATERIALS AND METHOD: 15 ears with chronic otitis media and 2 ears with congenital cholesteatoma were operated under local anesthesia using 2.7 mm and 4 mm rigid endoscopes, a camera, and a monitor. RESULTS: The structures in the posterior tympanum were directly visualized with 0 endoscope in all cases without removal of the overlying bone. The attic was visualized with 70 endoscope after removal of the incus. 15 tympanoplasties were performed in 14 cases of chronic otitis media and in 1 congenital cholesteatoma. Staged tympanoplasties were performed for the other 2 cases. The intraoperative aid postoperative courses were uneventful in all cases. All cases showed closure of' the perforation and 15 cases showed favorable hearing results postoperatively. CONCLUSION: The endoscopes directly visualized the structures in the posterior tympanum and the transcanal endoscopic tympanoplasties showed closure of the perforation and favorable hearing results postoperatively. With the employment of these endoscopes, minimally invasive otologic surgeries will be possible on the ears with narrow canal, adhesive otitis, ossicular abnormalities, and other abnormalities.
Adhesives ; Anesthesia, Local ; Cholesteatoma ; Ear ; Ear, Middle ; Employment ; Endoscopes ; Hearing ; Incus ; Otitis ; Otitis Media ; Tympanoplasty*

Purpose: To report a case of solitary fibrous tumor of the orbit in a patient with changes in tumor size and contrast enhancement.Case summary: A 64-year-old male patient presented with dizziness, discomfort on eye movement, anosmia, and proptosis. Orbital computed tomography showed an enhancing mass in the right extraconal space, lateral to the medial rectus and inferior to the superior oblique muscle. The mass appeared to be a cavernous hemangioma and the patient was monitored for changes in mass size and eye movements. After 24 months of follow-up, the mass size and symptoms of right eyelid swelling, proptosis, and diplopia had increased. Excision and biopsy of the mass were performed under general anesthesia. The biopsy confirmed that the mass was a solitary fibrous tumor. The postoperative period was uneventful and no recurrence was observed at 6 months after surgery. Conclusions Solitary fibrous tumor is a soft tissue tumor that rarely occurs in the orbit, and should be considered in cases with an intraorbital mass accompanied by increased size and changes in contrast enhancement on imaging.

PURPOSE: An increased incidence of gallstones has been widely reported in patients who had undergone a gastrectomy. But, there has been little information about the pathophysiologic mechanism for the occurrence of gallstones after gastric surgery. Many investigators have considered the cause to be decreased gallbladder motility due to vagal denervation. We observed higher increase in the incidence of gallbladder stones in patients who underwent a Billroth II gastrojejunostomy than in those who underwent a Billroth I gastrojejunostomy after radical subtotal gastrectomy. METHODS: We prospectively studied the change in the motility of the gallbladder after a gastrectomy. The gallbladder ejection fraction (EF) was compared pre- and postoperatively by using gallbladder scintigraphy with 2,6-diisopropyl-iminodiacetic acid (DISIDA). RESULTS: Twenty patients underwent a Billroth(B) I anastomosis and twelve patients underwent a B-II anastmosis after the gastrectomy. The means of the EF of the B-I group were 75.9%, 46.4%, 68.1% at the preoperative period, at 1 month and 6 months after the gastrectomy respectively. Those of B-II group were 78.2%, 45.3%, 56.3%, respectively. There was no statistically significant difference of EF between the two groups at postoperative 1 month, but the difference at postoperative 6months was statistically significant. The differences of EF between preoperative period and postoperative 1 month, 6 months were significant in the B-I group andthe B-II group. CONCLUSION: At 6 months postoperative period, there was more recovered gallbladder motility after a gastrectomy with B-I anastomosis than with B-II anastomosis.
Denervation ; Gallbladder* ; Gallstones ; Gastrectomy* ; Gastric Bypass ; Gastroenterostomy ; Humans ; Incidence ; Postoperative Period ; Preoperative Period ; Prospective Studies ; Radionuclide Imaging ; Research Personnel

PURPOSE: The diagnosis of acute cholecystitis is usually made by performing ultrasonography or biliary scintigraphy. We have introduced the (99m)Tc-ciprofloxacin (infecton) scan for diagnosing of acute cholecystitis. The main aim of this study was to evaluate the efficacy of (99m)Tc-ciprofloxacin imaging in comparison with ultrasonographic findings for the diagnosis of acute cholecystitis. METHODS: Sixteen patients who were thought to have acute or chronic cholecystitis, based on the clinical and sonographic findings, were included in this study. We gave intravenous (99m)Tc-ciprofloxacin to sixteen patients and we obtained the SPECT images after one hour. The final diagnosis of acute cholecystitis was made according to the pathologic reports. RESULTS: According to pathologic reports, out of the sixteen patients, twelve patients had acute cholecystitis and four patients had chronic cholecystitis. On the (99m)Tc-ciprofloxacin scans, twelve patients had positive images showing acute cholecystitis on account of the hot uptake in the gallbladder and four patents had negative images showing chronic cholecystitis due to the negative uptake in the gallbladder. Among them, one false positive case and one false negative case were observed. With performing ultrasonography, twelve and four patients were diagnosed as having acute and chronic cholecystitis respectively. Out of them one false positive case and three false negative cases were observed. Based on the pathologic reports, (99m)Tc-ciprofloxacin imaging has a sensitivity of 91.7% and a specificity of 75%. The ultrasonography had a sensitivity of 91.7% and a specificity of 25%. CONCLUSION: As a result of comparing the sensitivity and specificity of the (99m)Tc-ciprofloxacin scan with those of the ultrasonography, the (99m)Tc-ciprofloxacin scan is considered to be useful test method to diagnose acute cholecystitis.
Cholecystitis ; Cholecystitis, Acute* ; Diagnosis* ; Gallbladder ; Humans ; Radionuclide Imaging ; Sensitivity and Specificity ; Tomography, Emission-Computed, Single-Photon ; Ultrasonography