Lymphoepithelial carcinoma of the accessory parotid gland.

Lymphoepithelial carcinoma of the accessory parotid gland is rare, and to our knowledge, only two cases have previously been reported. It has an association with the Epstein-Barr virus and is usually seen in Asians and Greenland Eskimos. We report a case of lymphoepithelial carcinoma of the left accessory parotid gland in a 59-year-old European man who had been raised in the Belgian Congo. After excision of the left accessory parotid gland with preservation of the facial nerve, he recovered well without complication, and there was no evidence of locoregional recurrence or distant metastases after follow up of 3.5 years.

Persistent B lymphocyte depletion after an ultralow dose of rituximab for pemphigus vulgaris

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Simulations of dredged sediment spreading on a Posidonia oceanica meadow off the Ligurian coast, Northwestern Mediterranean.

The sandy deposits from dredging can have negative effects on the environment such as increase in suspended solids in the water column and their consequent transport. An experimental study was conducted to characterize water masses, dynamics, and sedimentation rates on the Ligurian continental shelf (Italy), where both a sand deposit, that could be used for beach nourishment, and a nearby Posidonia oceanica meadow coexist. The environmental plan provides a mathematical simulation of the sediment-dispersion to evaluate the possible impact on the meadow. It has been calculated that the dredging could double the concentration of suspended particles, but its scheduling will preclude a sediment accumulation. All the information obtained from this work will be used to study the environmental feasibility of the sand deposit exploitation and as starting point for drawing up the monitoring plan in case of dredging.

[Urinary tract involvement as the first clinical manifestation of adenocarcinoma of the colon]. / Afectación de la vía urinaria como primera manifestación clínica de un adenocarcinoma de colon.

A patient with a previous history of left renal colic and no evidence of passing calculi was admitted to hospital for exacerbation of the urinary condition. The IVP and US evaluation revealed a ureteral stop which appeared to be extrinsic on retrograde uretero-pyelography. Surgery disclosed a large urinoma in the lumbar fossa. The compromised ureteral segment was removed and the pathological analysis of the surgical specimen revealed infiltration from adenocarcinoma. A primary tumor was sought early postoperatively due to irregular constipation referred by the patient. Finally, adenocarcinoma of the sigmoid colon was found. Only 8 similar cases of urinoma from extravasation due to ureteral obstruction secondary to a tumor have been reported in the literature up to 1982.