Heterogeneous retreat and ice melt of Thwaites Glacier, West Antarctica.

The glaciers flowing into the Amundsen Sea Embayment, West Antarctica, have undergone acceleration and grounding line retreat over the past few decades that may yield an irreversible mass loss. Using a constellation of satellites, we detect the evolution of ice velocity, ice thinning, and grounding line retreat of Thwaites Glacier from 1992 to 2017. The results reveal a complex pattern of retreat and ice melt, with sectors retreating at 0.8 km/year and floating ice melting at 200 m/year, while others retreat at 0.3 km/year with ice melting 10 times slower. We interpret the results in terms of buoyancy/slope-driven seawater intrusion along preferential channels at tidal frequencies leading to more efficient melt in newly formed cavities. Such complexities in ice-ocean interaction are not currently represented in coupled ice sheet/ocean models.

[Dental-radicular cysts invading the maxillary sinus]. / Kystes radiculodentaires à expression sinusienne.

The authors report three cases of radicular cyst developing into the maxillary sinus which was partially or completely obscured. Looking for a thin rim of cortical bone should be undertaken in case of opacity of maxillary sinus. This rim correspond to the floor of the sinus, which is lifted up by the cyst. If the attenuation value of the intrasinusal process is near of that of water, the diagnosis of radicular cyst invading the maxillary sinus is very likely and may indicate intraoral surgical approach.

[Sternocostoclavicular osteoarthritis]. / Une ostéoarthrite sterno-costo-claviculaire.

On observation of a case of infectious osteoarthritis which was remarkable both because of its site, the sternoclavicular joint, and of the germ involved, which was Salmonella paratyphi A is reported.

[Rhinopharyngeal craniopharyngioma. CT X-ray and MRI aspects]. / Craniopharyngiome "rhinopharyngé". Aspect TDM et IRM.

The authors report about a rare site of craniopharyngioma, purely extracerebral and located in the sphenoid sinus and the rhinopharynx. No CT or MRI sign is pathognomonic for the lesion, but the presence of a fleshy process containing calcifications and cystic formations must lead to evoking this diagnosis. MRI assesses the extent of the lesions perfectly, but fails to detect small calcifications or ossifications accurately.

[Breast plasmacytoma. Apropos of a case. Review of the literature]. / Le plasmocytome mammaire. A propos d'un cas. Revue de la littérature.

The authors report a new case of a bilateral localisation of a mammary plasmacytoma, as an extension of the multiple myeloma, in a 41-year-old woman. There are 19 cases known. In 2/3 of the cases, the breast localisation was an extension of the multiple myeloma, as the new case reported; the others cases were considered as a solitary plasmacytoma. The authors describe its diagnostic imaging appearance.

[Realization of an incidence of the bicipital groove under the control of televised scopy]. / Réalisation d'une incidence de la gouttière bicipitale sous contrôle de la scopie télévisée.

A method is described for control of a bicipital groove projection using a tele-controlled table with centering guided by direct screen imaging: the patient is placed in contralateral anterior oblique position with the arm in antepulsion to project the groove into the supraspinal fossa on a lateral scapular image.

[Epilepsies of the young adult (author's transl)]. / Les epilepsies de l'adulte jeune.

Data on 614 epileptic patients whose first seizure occurred between the ages of 19 and 29 were reviewed and some clinical and electroencephalographical features compared, in order to clear up the semiology and etiology of this type of late-onset epilepsy. Partial epilepsies were more numerous than generalized epilepsies and post-traumatic epilepsies the more frequent. We could only study the evolution of 305 patients for 5 years or more: 60% were not stabilized but, probably, those who were free of seizures no longer consulted the physician. It seems difficult to compare our findings with other studies, the age periods in the latter being too broad (childhood epilepsy, late or very late onset epilepsy).

Tuberculous mediastinal lymphadenitis presenting as chest wall mass.

Tuberculous mediastinal lymphadenitis is an unusual presentation of primary tuberculosis in adults. In the case reported here, the mediastinal focus was initially obscured by a large chest wall mass that communicated with it. This combination of findings, which we believe to be reported first here, underscores the need to consider tuberculosis in differential diagnosis of mediastinal and chest wall masses.