The changes reported herein might influence the selection of the dental materials and will bring new knowledge in this field to prevent radiation-related caries in root dentin.

images in clinical medicineT h e n e w e ng l a n d j o u r na l o f m e dic i n e n engl j med 368;6 nejm.org february 7, 2013 e7 A 64-year-old man presented with a 6-month history of epigastric pain, weight loss, and nausea. In the previous 3 months, he had lost 10 kg. On examination, he was noted to have a nontender, firm, fixed, left supraclavicular lymph node measuring 3.0 by 2.5 cm. Upper endoscopy revealed an adenocarcinoma of the gastric corpus. Computed tomography of the abdomen showed liver metastasis. Virchow's node, or Troisier's node, refers to carcinomatous involvement of the supraclavicular nodes at the junction of the thoracic duct and the left subclavian vein. Usually, nodal enlargement is caused by metastatic gastric carcinoma, although supraclavicular nodal involvement can also be seen in other gastrointestinal, thoracic, and pelvic cancers. Gastric cancers tend to metastasize to this region by means of migration of tumor emboli through the thoracic duct, where subdiaphragmatic lymphatic drainage enters the venous circulation in the left subclavian vein.

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case report E499Cite as: Can Urol Assoc J 2013;7(7-8):e499-501. http://dx.doi.org/10.5489/cuaj.399 Published online July 2, 2013. AbstractPrimary urethral cancer in females is rare. It has a poor prognosis. The published data on this topic are limited, composed mostly of small case series. This paper presents a case of an advanced adenocarcinoma of the urethra, intestinal type, treated with anterior exenteration.

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