Disseminated E. coli urinary tract infection resulting in septic arthritis of the glenohumeral joint.

An 89-year-old male with a background of metastatic transitional cell carcinoma presented acutely with new hydronephrosis and deranged renal function secondary to high pressure chronic urinary retention. A recent urine culture was positive for Escherichia coli (E.coli). Co-incidentally, the patient's primary presenting symptom was right shoulder pain following recent low velocity trauma. X-ray demonstrated air density within the glenohumeral joint, with Magnetic Resonance Imaging (MRI) confirming features of septic arthritis. Surgical debridement was undertaken with tissue microscopy and culture identifying the presence of E. coli, confirming the diagnosis of disseminated urinary tract infection.

Fabrication and characterization of low loss rib chalcogenide waveguides made by dry etching.

We report the fabrication and characterization of rib chalcogenide waveguides produced by dry etching with CF4 and O2. The high index contrast waveguides (Deltan ~1) show a minimum propagation loss of 0.25 dB/cm. The high refractive nonlinearity of 100 times silica in As2S3 allowed observation of a pi phase shift due to self-phase modulation of an 8 ps duration 1573 nm pulse in a 5 cm long waveguide.