Level V metastasis rather than multilevel metastasis itself is associated with an increased risk of LRR. Patients with N1b PTC and level V metastasis require risk restratification and meticulous follow-up.

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the EUSO-Balloon instrument went for a night flight for several hours, 40 km above Timmins (Canada) balloon launching site, concretizing the hard work of an important part of the JEM-EUSO collaboration started 3 years before. This instrument consists of a telescope made of two lenses and a complex electronic chain divided in two main sub-systems: the PDM (Photo Detector Module) and the DP (Data Processor). Each of them is made of several innovative elements developed and tested in a short time. This paper presents their performances before and during the flight.

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