The magnetic phase diagram of Si-doped (0.7 and 1.0%) CuGe03 single crystals was obtained from an ultrasonic velocity measurement. The magnetic phase diagram is similar to what is generally found in pure spin-Peierls (SP) systems: a SP instability is identified although an additional antiferromagnetic phase is observed at the lowest temperatures. The diagram is weakly anisotropic: a spin-flop (SF) phase is observed for the magnetic field aligned along the c axis and a hard axis along a is deduced from the angular dependence of the SF field. These results are complemented by superconducting quantum interference device magnetization measurements.

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Liposarcomas of the gastrointestinal tract are exceedingly rare. Only nine cases of esophageal involvement have been described. A 68-year-old woman presented with an episode of vomiting followed by extrusion of a polypoid mass from the mouth. This 10th case of esophageal liposarcoma is the first in the literature to report a recurrence 25 years after the first episode.

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