Mediastinal peripheral T-cell lymphoma diagnosed by repeated biopsies after an initial diagnosis of fibrosing mediastinitis.

We report a case of mediastinal peripheral T-cell lymphoma not otherwise specified (PTCL-NOS) diagnosed by repeated biopsies. A 44-year-old man was admitted to our hospital with a 2-week history of facial swelling, neck distension, and dyspnoea on exertion. Computed tomography of the chest showed a mediastinal mass.

[A case of a septic pulmonary embolism-related implanted central venous port].

We report a case of a 32-year-old woman with a septic pulmonary embolism-related implanted central venous port. She was treated with S-1/cisplatin(CDDP)chemotherapy for recurrent gastric cancer. Her disease was progressive after five courses of S-1/CDDP combination therapy.

[Case of Toxocara canis larva migrans cured by additional treatment with albendazole].

A 42-year-old man presented at our emergency department with fever, sputum, and dyspnea. His chest X-ray films showed ground-glass opacities mainly in the upper and middle lung fields. We diagnosed pneumonia, gave antibiotic treatment, and his symptoms improved.

Colon tissue implanted into the glandular stomach in rats lack susceptibility to N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) carcinogenesis.

The present study was undertaken to determine the response of colon mucosa implanted into the fundus of stomach in 6-week old male F344 rats to oral administration of N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). Samples of colonic tissue about 8 mm in diameter were obtained from various colon sites and surgically implanted into the anterior wall of the fundus by isografting. MNNG was chronically administered at a concentration of 100 mg/l in the drinking water for 16 weeks starting 4 weeks after the operation and the grafted colon mucosa was examined at 12 months after the operation.