Ubiquity of optical activity in planar metamaterial scatterers

Recently it was discovered that periodic lattices of metamaterial scatterers show optical activity, even if the scatterers or lattice show no 2D or 3D chirality, if the illumination breaks symmetry. In this Letter we demonstrate that such `pseudo-chirality' is intrinsic to any single planar metamaterial scatterer and in fact has a well-defined value at a universal bound. We argue that in any circuit model, a nonzero electric and magnetic polarizability derived from a single resonance automatically imply strong bianisotropy, i.e., magneto-electric cross polarizability at the universal bound set by energy conservation. We confirm our claim by extracting polarizability tensors and cross sections for handed excitation from transmission measurements on near-infrared split ring arrays, and electrodynamic simulations for diverse metamaterial scatterers.Comment: 5 pages, 4 figure

Secondary central nervous system involvement in systemic ALK+ anaplastic large cell lymphoma: a case report

Systemic anaplastic large cell lymphoma is an infrequent form of non-Hodgkin lymphoma determined by the expression of CD30 with different clinical characteristics in its presentation. The majority of patients with anaplastic large cell lymphoma are in an advanced stage of the disease at the time of diagnosis but rarely with a leptomeningeal or central nervous system infiltration. We have presented a young patient with widespread systemic ALK+ anaplastic large cell lymphoma and a secondary central nervous system involvement verified by cytologic examination of the cerebrospinal fluid

Secondary central nervous system involvement in systemic ALK+ anaplastic large cell lymphoma: a case report

Systemic anaplastic large cell lymphoma is an infrequent form of non-Hodgkin lymphoma determined by the expression of CD30 with different clinical characteristics in its presentation. The majority of patients with anaplastic large cell lymphoma are in an advanced stage of the disease at the time of diagnosis but rarely with a leptomeningeal or central nervous system infiltration. We have presented a young patient with widespread systemic ALK+ anaplastic large cell lymphoma and a secondary central nervous system involvement verified by cytologic examination of the cerebrospinal fluid

Ingvinalna hernija koja sadrži inkarcerirani ureter transplantiranog bubrega

We presented a case of an inguinal hernia containing an incarcerated ureter in a patient with trans- planted kidney. A 60-year-old man was admitted to hospital with elevated creatinine levels and trans-abdominal ultrasound recognised hydronephrosis. An unenhanced CT scan revealed an in- carcerated ureter in the inguinal hernia sac. The imaging confirmed hydronephrosis of the enlarged kidney with dilated pyelon and calyces. Later control examinations reported no change of grade of hydronephrosis and kidney function, probably due to the intermittent nature of ureteral incarcer- ation. We present this case in light of the recent increase in reporting of ureteroinguinal hernias and as a reminder to radiologists always to check the course of the ureters when they encounter or suspect inguinal hernia.U ovom radu prikazujemo slučaj pacijenta s transplantiranim bubregom koji je razvio ingvinalnu herniju sa inkarceriranim ureterom. Muškarac u dobi od 60 godina primljen je u bolnicu s povišenim kreatininom te transabdominalnim ultrazvukom otkrivenom hidronefrozom. Nativni CT pregled pokazao je inkarcerirani ureter u vreći ingvinalne hernije. Potvrđena je i hidronefroza uvećanog bubrega s dilatiranim pijelonom i kaliksima. Kasniji kontrolni pregledi utvrdili su stacionarnu hidronefrozu trećeg stupnja te očuvanu bubrežnu funkciju, vjerojatno uslijed intermitentne prirode inkarceracije. Ovaj prikaz donosimo potaknuti sve učestalijim prijavljivanjem slučajeva uretero- ingvinalnih hernija posljednjih godina. Također, nadamo se da će ovaj rad poslužiti kao podsjetnik radiolozima da uvijek provjere tijek uretera pri pregledu ili sumnji na ingvinalnu herniju

Faze 1, 1979-04-27

Weekly newsletter published by Governors State University between 1971-1981

Nodularna plućna sarkoidoza prikazana kao imitacija diseminirane maligne bolesti

Due to its varying and often mimicking appearance, sarcoidosis is considered one of the great imitators in medicine. A rare form of pulmonary sarcoidosis, the nodular form, can be mistaken for disseminated malignancy. We present the case of 38-year-old patient, whose chest x ray demonstrated a large number of pulmo- nary nodules, more than 1 cm in diameter, predominantly in a peripheral distribution, with bilaterally enlarged hila, thus making disseminated malignant disease a part of differential diagnosis. The sight of multiple lung nodules can be very suggestive for metastatic disease and misleading in every- day clinical practice.Zbog svoje raznolike prezentacije i brojnih sličnosti s drugim bolestima, sarkoidoza je znana kao veliki imitator u medicini. Jedan od oblika sarkoidoze, nodularna plućna sarkoidoza, lako se može zamijeniti s malignom diseminiranom bolešću. Prikazujemo slučaj 38-godišnjeg pacijenta, čiji je torakalni rendgenogram pokazao veći broj periferno smještenih plućnih nodusa promjera većih od 1 cm uz obostrano uvećane hiluse. Takav nalaz upućivao je na diseminiranu malign bolest kao jednu od diferencijalnih dijagnoza. Cilj ovog prikaza slučaja je podsjetiti kolege na nodularnu plućnu sarkoido- zu kao jednu od mogućih dijagnoza u slučaju ovako sugestivnih nalaza kod pacijenata bez ranije poznate maligne bolesti

Nodularna plućna sarkoidoza prikazana kao imitacija diseminirane maligne bolesti

Due to its varying and often mimicking appearance, sarcoidosis is considered one of the great imitators in medicine. A rare form of pulmonary sarcoidosis, the nodular form, can be mistaken for disseminated malignancy. We present the case of 38-year-old patient, whose chest x ray demonstrated a large number of pulmo- nary nodules, more than 1 cm in diameter, predominantly in a peripheral distribution, with bilaterally enlarged hila, thus making disseminated malignant disease a part of differential diagnosis. The sight of multiple lung nodules can be very suggestive for metastatic disease and misleading in every- day clinical practice.Zbog svoje raznolike prezentacije i brojnih sličnosti s drugim bolestima, sarkoidoza je znana kao veliki imitator u medicini. Jedan od oblika sarkoidoze, nodularna plućna sarkoidoza, lako se može zamijeniti s malignom diseminiranom bolešću. Prikazujemo slučaj 38-godišnjeg pacijenta, čiji je torakalni rendgenogram pokazao veći broj periferno smještenih plućnih nodusa promjera većih od 1 cm uz obostrano uvećane hiluse. Takav nalaz upućivao je na diseminiranu malign bolest kao jednu od diferencijalnih dijagnoza. Cilj ovog prikaza slučaja je podsjetiti kolege na nodularnu plućnu sarkoido- zu kao jednu od mogućih dijagnoza u slučaju ovako sugestivnih nalaza kod pacijenata bez ranije poznate maligne bolesti

Acute encephalitis caused by Streptococcus pneumoniae: case report and review of the literature

Introduction: Streptococcus pneumoniae (pneumococcus), is a Gram-positive, spherical bacteria, member of the genus Streptococcus. It resides asymptomatically in healthy carriers typically colonizing the respiratory tract, sinuses, and nasal cavity. However, in susceptible individuals with weaker im- mune systems, pneumococcus may become pathogenic and spread to other locations causing cardiores- piratory and bone diseases as well as meningitis. Encephalitis and brain abscesses caused by Streptococ- cus pneumoniae are rare entities and they account for less than 1% of all bacterial brain abscesses. Purpose: We aim to present a case report of an acute encephalitis in a 16 years old female patient caused by Streptococcus pneumoniae, with review of the literature. Case Report: A 16 years old, right-handed female, was hospitalized at the clinic due to impaired con- sciousness (coma) and decerebrate posturing. The symptoms started the previous days with vomiting, drowsiness, subfebrile temperature and were originally perceived as food poisoning. Laboratory blood analysis were normal at the beginning and despite supportive therapy, deterioration of the clinical con- dition occurred, followed by confusion, muscle weakness and collapse. These symptoms were initially addressed as a functional neurological symptom disorder and the patient was referred to a psychiatrist. However, the patient’s condition got worse, with febrile symptoms, while the control laboratory blood examination showed signs of infectious syndrome. The patient was seen by infectologist and COV- ID-19 test was performed, with negative result. The analysis of CSF found bacterial infiltration, while the PCR test isolated Streptococcus pneumoniae. MRI of the brain (native and with contrast) showed bilateral multiple microabscesses, predominantly in the frontal and parietal regions. After the diagnosis was confirmed, the patient was treated promptly with antiedematous, antibiotic, neuroprotective and other symptomatic therapy for a period of 2 months. Her condition gradually improved completely, with amelioration of the state of consciousness and muscle weakness as well. Control laboratory blood analysis and CSF examination showed improvement as well, while the MRI of the brain displayed reduction of the previously described lesions and edema. Conclusion: The atypical clinical picture may sometimes mislead the treating physician. Cases with encephalitis caused by Streptococcus pneumoniae have been rarely described in the literature, however, early recognition and adequate treatment are crucial for the positive outcome

Gender differences in risk factors and cardiovascular outcomes in symptomatic peripheral artery disease patients

AIM: To compare the influence of gender on adverse cardiovascular events in patients with sympto- matic peripheral artery disease (PAD) based on their clinical presentation (intermittent claudication or critical limb ischemia, CLI). PATIENTS AND METHODS: A prospective, registry-based study involving patients with symp- tomatic peripheral artery disease was conducted. Patients were divided according to initial clinical presentation (intermittent claudication or CLI) and gender and were analyzed separately. Risk factors, prognosticators and longitudinal events (major adverse cardiovascular events, MACE: myocardial infarction, stroke, death) were collected. Data were obtained prospectively from hospital records and death certificates. RESULTS: 1084 patients (35% women) with symptomatic PAD were included in the study. Mean follow-up period was 45 months, and 371 patients (34%) experienced MACE. Compared to males, females were older (p <0.001) and were more likely to have CLI (p=0.006) and impaired renal func- tion (p <0.001). Diabetes (p=0.043) and smoking (p <0.001) were more prevalent in men, as well as polyvascular disease (p=0.024). No significant difference was found regarding the use of medications. No differences were observed in MACE-free survival between women and men, both in subgroups of patients with intermittent claudication (log-rank p=0.759) and CLI (log-rank p=0.558). CONCLUSIONS: Our study showed no gender differences in the occurrence of MACE based on initial clinical presentations of PAD

Faze 1, 1979-04-20

Weekly newsletter published by Governors State University between 1971-1981