Neuroendocrine tumors (NETs) are an unusual family of neoplasms with a wide and complex spectrum of clinical behavior. Here, we present the first report of a National Cancer Registry of ...gastroenteropancreatic neuroendocrine tumors from a Southern European country.
Data was provided online at www.retegep.net by participating centers and assessed for internal consistency by external independent reviewers.
The study cohort comprised 907 tumors. The most common tumor types were carcinoids (55%), pancreatic nonfunctional tumors (20%), metastatic NETs of unknown primary (9%), insulinomas (8%) and gastrinomas (4%). Forty-four percent presented with distant disease at diagnosis, most often those from small intestine (65%), colon (48%), rectum (40%) and pancreas (38%), being most unusual in appendix primaries (1.3%). Stage at diagnosis varied significantly according to sex, localization of primary tumor, tumor type and grade. Overall 5-year survival was 75.4% (95% confidence interval 71.3% to 79.5%) and was significantly greater in women, younger patients and patients with hormonal syndrome and early stage or lower grade tumors. Prognosis also differed according to tumor type and primary tumor site. However, stage and Ki-67 index were the only independent predictors for survival.
This national database reveals relevant information regarding epidemiology, current clinical practices and prognosis of NETs in Spain, providing valuable insights that may contribute to understand regional disparities in the incidence, patterns of care and survival of this heterogeneous disease across different continents and countries.
This study compared the activity and toxicity of fluorouracil (5-FU)/ cisplatin with the combination tegafur and uracil (UFT)/cisplatin in the neoadjuvant treatment of locally advanced-stage III or ...IV (MO)-head and neck cancer. A total of 67 patients were randomly assigned to treatment with cisplatin 100 mg/m2 on day 1 followed by either a continuous infusion of 5-FU 1,000 mg/m2/day on days 2 through 6 (group 1) or oral administration of UFT 300 mg/m2/day on days 2 through 20 (group 2). Both treatments were repeated every 21 days for four cycles. Responding patients received locoregional standard radiotherapy (50 to 70 Gy) after chemotherapy. Group 1 was comprised of 34 patients, 30 of whom were men, with a median age of 57.5 years; 79% of this group had a Karnofsky performance status of 90% to 100%; 70% had a squamous and 29% an undifferentiated histology. The majority (85%) had stage IV disease. Of the 33 patients in group 2, 29 were men. The median age was 56 years. Most (88%) had a performance status of 90% to 100%. More patients had a squamous than an undifferentiated histology (82% vs 18%) and most (88%) had stage IV disease. Overall response in group 1 was 73% (21% complete) compared with 79% (18% complete) in group 2. At a median follow-up of 84 months, no significant differences have emerged in overall survival, 15 vs 37 months, or time to progression, 8.5 vs 14.5 months, for groups 1 and 2, respectively. Toxicity was also similar, except for phlebitis, which occurred significantly more often in group 1 (71% vs 9%). Cisplatin/UFT was as effective as the classic cisplatin/5-FU regimen and has the advantages of outpatient oral administration and a lower incidence of phlebitis.
Neuroendocrine pancreatic tumors (PanNETs) are graded on the basis of their proliferative activity. Cytological samples are commonly the only samples available, but the determination of Ki-67 in ...cytology and its reliability as a measure of tumor mitotic activity is not well settled. We have retrospectively reviewed all the cases of FNA under EUS control of PanNETs in a 10-year period (2006–2016) in the Hospital Clínico San Carlos (Madrid). We identified 10 PanNET cases with histological correlation. Median age was 49.4 years and the patients were mainly women. PanNETs were located more frequently in the tail of the pancreas, with a median size of 33.8 mm. None of our cases was a grade 3 tumor. The seven grade 1 tumors confirmed in histology had consistent Ki-67 in cytology. In three cases (30 %), there were discrepancies between the Ki-67 index measured in cytology and histology, and the differences ranged from 2 to 15 %; all these cases were grade 2 tumors in histology and were graded as grade 1 tumors in FNA material. Our results are consistent with previous studies which showed understaging when tumor grade was assessed in cytological samples, mainly in G2 tumors. Previous literature has shown that Ki-67 assessment in EUS-FNA samples is a useful tool to rule out G3 tumors, but can be problematic for distinguishing G1 and G2 tumors.
Although metastasis is relatively frequent in renal cell carcinoma (affecting mainly the lungs, lymphatic glands and bones), location of metastasis in muscles is extremely rare as in other ...oncological processes. The literature only offers isolated cases of renal cell carcinoma with metastasis in muscles, and no preferred muscular site is found in these cases nor is there any clear intrinsic relation to prognosis, having been described both at the onset an upon relapse of the oncological process. The intimate mechanism behind this infrequent metastatic site is unknown even today but it presents a series of specific and peculiar factors such as vascular flow, metabolism and oxygen tissue pressure which can negatively condition this process. We present the case of a 60-year-old patient who began with a mass in the triceps muscle. A biopsy confirmed its metastatic nature and indicated an asymptomatic renal cell carcinoma. Further complementary examinations showed metastasis in other muscle groups.
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