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BACKGROUND: Version 2 of the Collaborative Stage Data Collection System (CSv2) became effective with cases diagnosed in 2010. This report focuses on the CSv2 components required to derive the American Joint Committee on Cancer (AJCC) stage for prostate cancer and on the site-specific factors for prostate cancer captured in CSv2. The report also highlights differences between the AJCC 6th and 7th editions for classifying prostate cancer stage. METHODS: Data from 18 Surveillance, Epidemiology, and End Results (SEER) Program population-based registries (SEER-18) were analyzed for the years 2004-2010, which included 400,591 prostate cancer cases. RESULTS: CSv2 provides specificity with regard to the Gleason grading system by distinguishing between clinical and pathologic patterns and scores. The AJCC 7th edition incorporates prostate-specific antigen values into staging, subdivides stage II into IIA and IIB, and reclassifies extraprostatic invasion with microscopic bladder neck invasion from T4 in the 6th edition to T3a; this latter change affected the AJCC stage of 283 cases in 2010. Of the 44,578 prostate cancer cases diagnosed in 2010 that would have been classified as stage II in the AJCC 6th edition, 32.7%, 27.5%, and 39.8% are classified as stages I, IIA, and IIB, respectively, in the 7th edition. CONCLUSIONS: CSv2 provides more information than was previously available to researchers using SEER prostate data. The absence of a clearly defined clinical stage for each prostate case is the overriding limitation that researchers face in relying on Collaborative Stage information to analyze prostate cancer data.

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Uterine carcinosarcoma (termed malignant mixed müllerian tumor) is a rare neoplasm of the uterus with a poor prognosis. There have been very few cases in the literature describing the PET/CT findings of uterine carcinosarcoma. We report a case of tissue-proven carcinosarcoma of the uterine corpus in a 65-year-old woman with elevated serum alpha-fetoprotein (AFP), whose 18F-FDG PET/CT showed a 10.3-cm mass in the uterus with uneven high FDG uptake. The SUVmax was 12.8. After surgery, the patient received 6 courses of chemotherapy, and the serum levels of AFP decreased to reference range.

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OBJECTIVE: GM-CSF is a recombinant human cytokine, which promotes the proliferation and differentiation of granulocytes and monocytes, and is associated with anti-tumor activity. The primary objective was to define the median time to treatment termination (TTT) with women with relapsed ovarian cancer treated with single agent GM-CSF delivered subcutaneously (SC). PATIENTS AND METHODS: Open label phase II study in asymptomatic patients with recurrent müllerian malignancy without an indication for immediate systemic chemotherapy. In the first cohort of 35 women, GM-CSF 250 microg/m(2) was administered SC on days 1-14 of a 28-day cycle, the second cohort received continuous GM-CSF 150 microg/m(2) given with dose escalation. RESULTS: Seventy-two women were enrolled. Best overall response included one complete response, and 20 patients with stable disease (23%), 4 of whom had stable disease for >6 months. Median TTT was 78 days. Toxicity in both cohorts was generally mild; however, four patients experienced excessive toxicity and withdrew consent. In the first cohort, CA-125 dropped in 70% of women from their baseline on study value (median change -23%, range -48 to +116%) after 14 days of GM-CSF. The magnitude of CA-125 drop during the first 2 weeks of therapy also showed a positive inverse correlation with day 15 white cell count for the whole group (p=0.038). CONCLUSION: GM-CSF is well tolerated and frequently associated with a decline in CA-125 that is correlated with leukocytosis. Although median TTT is modest, a subset of women had prolonged stable disease.

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CA125 is a well-recognized marker for endometrial cancer. Uterine malignant mixed müllerian tumors (MMMTs) are increasingly being recognized as an aggressive adenocarcinoma, not a sarcoma. There are no data in the literature regarding CA125 in this malignancy. One hundred twelve women with surgically staged MMMT, diagnosed between July 1990 and September 2005, had a retrospective chart review performed. Preoperative CA125 levels were available in 29 (26%) women. Seventeen (49%) women had levels above the upper limit of normal of 35 kmicro/L. Mean levels increased with increasing surgical stage: stage I 53.4 kmicro/L; stage II 122.5 kmicro/L; stage III 147.1 kmicro/L; and stage IV 428.4 kmicro/L. Elevated levels of CA19-9, CEA, and CA15-3 were found in 8%, 12%, and 25%, respectively.

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OBJECTIVE: Pegylated liposomally encapsulated doxorubicin (Doxil. Ortho-Biotech) and paclitaxel (Taxol, Bristol Myers Squibb) are both active against Müllerian malignancies. A phase II trial was performed to determine the toxicity and efficacy of these agents when administered in combination. METHODS: Patients were initially treated with 30 mg/m(2) of liposomal doxorubicin every 21 days and 70 mg/m(2) of paclitaxel every week for 18 weeks. The plasma pharmacokinetics of paclitaxel was determined when administered alone and concurrently with liposomal doxorubicin. RESULTS: Forty women with recurrent gynecologic malignancies of Müllerian origin including 34 with ovary and primary peritoneal cancer (85%) were enrolled. Toxicity was evaluated for all 508 cycles of therapy. Paclitaxel and liposomal doxorubicin were delivered at 95% (66.4 mg/m(2)/week) and 77% (7.65 mg/m(2)/week) of their intended weekly dose intensities, respectively. Reductions in the dose of liposomal doxorubicin were frequently required for palmar plantar erythrodysesthesia during the latter cycles of therapy. There were 4 patients with a complete response and 7 with partial responses, for an overall objective response rate of 29%, among the 38 evaluable patients. Response rates for the subset of 13 women with tumor recurrence occurring at least 6 months after prior platinum-based therapy was 54%. The concurrent administration of liposomal doxorubicin did not alter the pharmacokinetic disposition of paclitaxel. CONCLUSION: Liposomal doxorubicin with weekly paclitaxel is active in Müllerian malignancies. The concurrent delivery of the weekly paclitaxel with liposomal doxorubicin may increase liposomal doxorubicin skin toxicity. Liposomal doxorubicin does not alter the pharmacokinetics of paclitaxel.

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