A Rare Case of Undifferentiated Pleomorphic Sarcoma with Central Necrosis in the Right Atrium.

Primary cardiac tumors, which are uncommon types of tumors, can be presented with a variety of clinical signs and symptoms, depending on their location. We present a case of a 57-year-old female patient with a severe right-sided heart failure. Examination using 2-dimensional transthoracic and 3-dimensional transoesophageal echocardiography detected a large, oval, tumor-like formation within the right atrium, which compromised the blood flow from the superior and inferior vena cava. It appeared to have an irregular echo-free space in its central part, probably due to necrosis. Thoracic multislice computed tomography revealed a heterogeneous, expansive, tumor-like mass in the right atrium, with signs of bleeding in its center. Although there were no signs of metastatic dissemination, it could not be excluded that the tumor-like mass originated outside of the heart. The patient underwent surgical resection of the tumor. The surgery was accompanied with bleeding complications that developed due to the central necrosis with local infiltration. During the postoperative period, severe systemic inflammatory response syndrome developed and the patient died. Pathologists diagnosed undifferentiated pleomorphic cardiac sarcoma for which the prognosis is usually poor. The median survival of patients with this type of diagnosis is less than 1 year, even with surgical resection and further adjuvant therapy.

Giant Fibrovascular Polyp as an Unusual Cause of Globus Pharyngeus.

Differential diagnosis of globus sensation in an otherwise asymptomatic patient should include hypopharyngeal fibrovascular polyp to avoid potentially fatal complications like airway compromise following regurgitation. We present a case of a 74-year-old man with a 13-cm long hypopharyngeal fibrovascular polyp with 9 months history of globus sensation. A narrow stalk of the giant polyp allowed endoscopic removal and complete resection with the CO2 laser. Histopathological examination was conclusive for the fibrovascular polyp.

3D integrated hybrid silicon laser.

Lasers were realized on silicon by flip-chip bonding of indium phosphide (InP) devices containing total internal reflection turning mirrors for surface emission. Light is coupled to the silicon waveguides through surface grating couplers. With this technique, InP lasers were integrated on silicon. Laser cavities were also formed by coupling InP reflective semiconductor optical amplifiers to microring resonator filters and distributed Bragg reflector mirrors. Single-mode continuous wave lasing was demonstrated with a side mode suppression ratio of 30 dB. Up to 2 mW of optical power was coupled to the silicon waveguide. Thermal simulations were also performed to evaluate the low thermal impedance afforded by this architecture and potential for high wall-plug efficiency.

Atypical presentation of posterior reversible encephalopathy syndrome: Clinical and radiological characteristics in eclamptic patients.

Posterior reversible encephalopathy syndrome (PRES) is an obstetric emergency frequently occurring in a pregnant or puerperal woman, manifested with an acute headache, consciousness impairment, seizures, and visual deficits and is associated with white matter changes predominantly affecting the posterior parietal and occipital lobes of the brain. Apart from the above-described typical location of the changes, the most common atypical location involves the brain stem and basal ganglia. Since magnetic resonance imaging (MRI) is more sensitive and specific imaging technique compared to computerized tomography, establishing the diagnosis and follow-up in patients with PRES is based mainly on MRI findings. It is particularly important not to exclude PRES as a possible diagnosis when we have the appropriate clinical presentation accompanied by the atypical radiological findings, since this clinical-radiological syndrome can often be manifested with an atypical MRI image.

[Occlusion of maxillary artery in treatment of trigeminal neuralgia].

INTRODUCTION: This paper deals with a treating method of trigeminal neuralgia classified so far as idiopathic neuralgias and treated conservatively. The study was aimed at proving the compression of peripheral branches of N. trigeminus in those patients by vascular elements of A. maxillaris within the bone-ligament space of the scull and the face base. MATERIAL AND METHODS: The study sample consisted of 76 patients having trigeminal neuralgia. The compression was proved by clinical examination, by angiography and electrophysiological investigations. Endovascular occlusion of A. maxillaris is the original method and it was carried out in selected patients. RESULTS: This method was applied in 76 patients. Embolisation was done in 71 patients by using occlusion spiral and gelfoan was used in 3 patients. Externa carotid artery ligation was done in 2 cases. CONCLUSION: The effect of absolute improvement has been achieved and verified by electrophysiological method and subjective assessment of the patients.

Endovascular treatment of hereditary hemorrhagic telangiectases of the tongue.

Hereditary hemorrhagic telangiectasia, also known as Osler-Weber-Rendu disease, is an autosomal dominant disorder involving vascular abnormalities of various organs. Telangiectases are frequently observed, predominantly on the nasal and oral mucosa. We present a case a of 53-year-old man with the tonge hemorrhagic telangiectases and epistaxis. Selective catheterization and embolization of the right lingual artery led to size redution and no bleeding from tongue telangiectases.