For some tumors, cisplatin appears to be superior to carboplatin in terms of therapeutic effectiveness (germ cell tumors, bladder cancer, head and neck cancer), while for others, effectiveness is comparable (lung cancer, ovarian cancer). Toxicity profiles are distinctly different for the two analogues however, generally favoring carboplatin. The issue of potential carboplatin underdosing related to the lack of physiologic dose calculations (utilizing the AUC [area under the curve] method) in the comparative trials of cis- versus carboplatin is probably not clinically important since a dose response effect has not been established for carboplatin or for cisplatin. The selection of the optimal platinum analogue to be employed is dependent on the type of tumor, the treatment intention (palliative vs. curative) and the other component drugs being used in combination.
Oral ondansetron had a significant effect in the control of cisplatin-induced delayed emesis and nausea in patients who had not required rescue antiemetics during the acute emesis period. The control of delayed nausea and vomiting was most notable in the immediate 2 days following cisplatin administration, with the clinical difference narrowing between the two treatment arms on subsequent days.
The treatment of advanced colorectal cancer has improved in recent years. Prospective randomized trials comparing innovative therapies with the “standard” bolus dose of 5‐fluorouracil (5‐FU) found increased response rates after biochemical modification of the drug, infusion administration of 5‐FU, and direct intrahepatic arterial infusion. Although the impact on survival of these techniques has been minimal, it is possible that these innovative approaches provide an incremental survival advantage for certain subgroups of patients that may be the foundation for additional therapeutic improvements in the future.
Hypoglycemia secondary to malignant tumors is rare. Mesenchymal tumors of nonpancreatic origin are the most common tumors associated with the hypoglycemia syndrome, and the clinical features of 115 reported cases are reviewed. The major anatomic distributions of the tumors are thoracic (30%) abdominal (65%), and uncommon locations (less than 5%). Approximately 50% of the tumors were resectable (59 patients), and in 60% the surgical procedure was curative. In the remaining 40% local recurrence predominated related to site of tumor and presence of contiguous organ invasion. The application of multimodality adjuvant therapy for hypoglycemia associated mesenchymal tumors should be based on an understanding of the natural history of the tumor.
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