Docetaxel has major activity against SCCHN. It appears to be well tolerated in this group of patients and can be safely administered on an outpatient basis. Premedication with dexamethasone, cimetidine, and diphenhydramine is associated with a reduced incidence of significant edema, hypersensitivity reactions, and dermatologic toxicities.
Thirteen patients with carcinomas of major and minor salivary gland origin (nine adenoid cystic carcinomas and four adenocarcinomas) were treated with cyclophosphamide (500 mg/m2), doxorubicin (50 mg/m2), and cisplatin (50 mg/m2) (CAP) by intravenous injections on the first day of a 28-day regimen. Sixty-one cycles of CAP were administered (mean, 4.7 cycles per patient). Eleven patients were treated for palliation of recurrent disease (locoregional, ten; lung, ten; liver, three; and bone, three). Two patients untreated previously, one with extensive local disease involving the base of the skull and one with a solitary lung metastasis (resected with a positive margin) and an initially unappreciated base of tongue primary, received two cycles of CAP followed by local treatment and adjuvant CAP. Previous therapy for the 11 patients with recurrent disease included surgery (ten), radiotherapy [RT(11)], chemotherapy (three), or hormonal therapy (two). Three complete and three partial responses to chemotherapy were noted for an overall response rate of 46%. The median duration of response in palliative patients was 5 months (range, 2 to 9). Of the two patients receiving induction CAP, one relapsed with distant disease 26 months after treatment, and the other remains disease-free after 60 months of follow-up examination. Chemotherapy was well tolerated generally, and no chemotherapy-related deaths occurred. One hypertensive patient suffered a stroke after 3 cycles of therapy. CAP is an active regimen against salivary gland carcinomas and deserves further study. Also, it may be of value as induction or adjuvant treatment for patients with advanced disease untreated previously.
TPFL5 is a tolerable induction regimen in patients with good performance status. The DLT is neutropenia with significant mucositis, diarrhea, peripheral neuropathy, and sodium-wasting nephropathy. The high response rates to TPFL5 justify further evaluation of this combination of agents in the context of formal clinical trials.
PFL has significant activity with acceptable toxicity in patients with advanced disease who have a good performance status. Preservation of the primary tumor site could be achieved without apparent loss of local control or survival. Management of neck disease by surgery or RT must be individualized and separate from management of primary tumor. Survival compares favorably with similar trials of induction chemotherapy or chemoradiotherapy.
Continuous infusion cisplatin, 5-fluorouracil, and high-dose leucovorin is a new and highly active chemotherapy regimen that can achieve clinical and pathologically confirmed complete responses in a substantial proportion of patients with advanced, local-regional squamous cell carcinoma of the head and neck. Further studies are needed to confirm the activity of PFL and to determine its potential impact on local tumor control and disease-free and overall survival.
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