Pancreatectomy with arterial resection for periampullary cancer: outcomes after planned or unplanned events in a nationwide, multicentre cohort

Introduction: Arterial resections in pancreatic surgery may be planned to obtain a radical oncological resection, or unplanned after iatrogenic injury during dissection. Most data on planned arterial resection come from single, very-high-volume centres and suggest that these resections might be feasible and even beneficial after preoperative chemotherapy in highly selected patients with pancreatic cancer1–3. However, real-world data on such planned and unplanned arterial resection at a nationwide level are scarce4. Furthermore, distinctions between planned and unplanned arterial resection are seldomly reported, even though this might have clinical implications. The present study evaluated the incidence and surgical outcome of all planned and unplanned arterial resections for pancreatic and periampullary cancer in The Netherlands.Surgical oncolog

Dynamics of an erbium-doped fiber dual-ring laser

We report results of a numerical investigation on two-dimensional parameter-spaces of a set of four autonomous, seven-parameter, first-order ordinary differential equations, which models an erbium-doped fiber dual-ring laser. By using Lyapunov exponents to numerically characterize the dynamics of the model in the parameter-space, we show that it presents typical self-organized periodic structures embedded in a chaotic region

Athenian eye cups in context.

Since the late 1970s, scholars have explored Athenian eye cups within the presumed context of the symposion, privileging a hypothetical Athenian viewer and themes of masking and play. Such emphases, however, neglect chronology and distribution, which reveal the complexity of the pottery trade during the late sixth and the fifth centuries B.C.E. Although many eye cups have been found in Athens—namely on the Acropolis and mainly from late in the series—the majority come from funerary, sanctuary, and domestic contexts to the west and east. Most of the earliest, largest, and highest-quality examples were exported to Etruria, where the symposion as the Athenians knew it did not exist. Workshops and traders were clearly aware of their audiences at home and abroad and shifted production and distribution of vases to suit. The Etruscan consumers of eye cups made conscious choices regarding their purchase and use. Tomb assemblages from Vulci and elsewhere reveal their multivalent significance: they are emblematic of banqueting in life and death, apotropaic entities, likely with ritual uses. Rather than being signs of hellenization in a foreign culture, Athenian eye cups—like all Greek vases—were brought into Etruria, then integrated, manipulated, and even transformed to suit local needs and beliefs