e11516 Background: Inflammatory breast cancer (IBC) is the most virulent type of breast cancer. It represents 1 to 6% of all the breast cancer in Western countries. It is speculated that the incidence of IBC is greater in emerging countries especially in North Africa. The management of this disease requires a multidisciplinary. Methods: We recorded the cases of 80 patients with IBC admitted in the Medical Oncology Unit between January 2007 and August 2011. We included patients with IBC classified as T4d using criteria based on the tumor-node-metastasis (TNM) classification . The aims of this study is to evaluate the epidemiological, clinical, histopathological and therapeutic aspects of this disease. Results: The median age of our patients was 44.5 years ranged from 24 to 88 years. The incidence of IBC in our study was 7.8%. The lymph node involvement was noted in 60% distributed as following: N0 in 40%, N1 in 30%, N2 in 19%, N3 in 11%. For histology, ductal carcinoma represents 96% of all cases. Human epithelial receptor 2 (HER 2) was positive in 32% of the cases. Hormonal receptors were negative in 22% of the cases. The grade of the tumor according to the Scarff Bloom Richardson classification was as following: grade I ( 2.5%), grade II (52%), grade III (45.5%). All patients received neoadjuvant chemotherapy. 45% received chemotherapy with anthracyclines, 35% were treated with docetaxel and anthracycline and 10% with the association chemotherapy Trastuzumab. According to RECIST classification, a partial or total clinical response was noted in 80% of cases, 10% of patients had stability, and 10% clinical progression. According to Sattalof classification, a histological response greater than 50% in the tumor (TB) was noted in 45%. A complete pathological response (TANA or TANB) was obtained in 15% of cases. After a median follow up of 2 years 35% of the patients had a metastatic or locoregional reccurence, 45% of the cases remain in complete remission. Conclusions: The result of our study is concordant with the litterature. The incidence of IBC was greater than the incidence in western countries. The IBC was also associated with high grade and younger age. Despite a good clinical and pathological response to chemotherapy, outcomes were poor.

e14726 Background: Biliary tract cancers (BTC) are relatively rare (3% of digestive cancers), they mainly affect older women and are located in the gallbladder in about 70% of the cases. Methods: In this retrospective study, we reviewed 63 cases of BTC admitted in the medical oncology unit of HASSAN II university center between January 2007 and December 2011. The aim of this study is to define epidemiologic, diagnostic and therapeutic aspects of this disease in a Moroccan population. Results: In our study, BTC account for 4,9% of digestive cancers. The mean age of our patients was 58,2 years ranged from 32 to 81 years, female gender represent 69%. The tumors were located in the gallbladder (GB) in 70% of the cases divided into adenocarcinoma (79%) and squamous cell carcinoma (21%). The other locations were hilar cholangiocarcinoma (24%) and intrahepatic cholangiocarcinoma (6%). Magnetic resonance cholangiographic was performed (n=15) and suspected cancer in all cases. Incidental finding of GB cancer at surgery was recorded in 21 patients: intraoperatively in 8 cases or after pathological study in 13 cases. Staging of the disease was divided into localized stage (7%), locally advanced stage (13%) and metastatic stage (80%). A complete surgery in GB cancer was performed in 13 patients, a palliative surgery was done in 20 patients: cholecystectomy (n=7) and biliary drainage (n=13). For metastatic patients (n=44), a palliative chemotherapy was administred as following: combination of cisplatin and gemcitabin (n=18), gemcitabin (n=7), combination of cisplatin and 5 fluoro uracile (n=5), combination of oxaliplatin and gemcitabin (n=3), capecitabine (n=3), FUFOL Mayo clinic (n=2) and combination of capecitabine and oxaliplatin (n=2). While 9% of the patients received supportive care because of their comorbidities and the deterioration of the performans status and liver blood tests. Conclusions: Because of the silent evolution of BTC, the diagnosis is therefore delayed, the prognosis is poor and treatment is usually palliative. Our results are consistent with those of the literature concerning the epidemiological finding and diagnosis aspects.A multidisciplinary approach is recommended to improve the prognosis of patients with BTC.

e14725 Background: Signet ring cell carcinoma (SRC) of the stomach is a histological type based on microscopic characteristics, and its clinicopathologic characteristics and treatment are still controversial. Methods: In this retrospective study, we reviewed the records of 68 patients diagnosed with gastric SRC treated between January 2007 and July 2011. The aim of this study is to identify the epidemiological, clinical and therapeutic features of this type cancer in a Moroccan population Results: In our study, SRC of the stomach represents 39 % of the gastric cancer and 11 % of all the digestif tract cancer. The mean age at the diagnosis was 46 years ranged from 25 to 80 years, 68 % were female. The clinical symptoms were vomiting (72%), epigastric pain (70%) and deterioration of Performans Status (93%). 73% of the patients were metastatic at the diagnosis, sites of metastasis were: peritoneum (85 %), lymphatic nodes (43 %), liver (35%), lung (28 %), ovaries (7 %), adrenal glands (7 %), bone (4 %) and the kidney (2 %). 23% of the patients had a localized disease and locally advanced 8%. Among the 64 patients, 27% were treated with curative intent by total gastrectomy followed by adjuvant concomittant chemoradiotherapy (n=6), adjuvant chemotherapy (n = 4) or perioperative chemotherapy (n=7). For the metastatic patients, chemotherapy regimens were distributed as following: ECC (Epirubicine 50 mg/m2, Cisplatine 60 mg/m2, Capecitabine 625 mg/m2/12h) was administred to 45 % of the cases, cisplatine-5FU to 18 % of the cases, capecitabine as monotherapy for 16 %; FUFOL Mayo clinic regimen for 9 % and EOX (Epirubicine 50 mg/m2, oxaliplatine 130 mg/m2, capecitabine 625 mg/m2/12h) for 5%. 7% of the patients were oriented to supportive care. A second line of chemotherapy was administed to 4 patients based on XELIRI (irinotecan 250 mg/m2 and capecitabine 2000mg/d for 14 days) in 3 patients and XELOX (oxaliplatine 85 mg/m2 and capecitabine 2,000mg/d for 14 days) in one patient (n = 1). Conclusions: The gastric Signet ring cell carcinoma represents an entity with specific characteristics, which tends more toward tumor invasion depth, with nodal and peritoneal metastases. Our results are consistent with those of the literature concerning the epidemiological finding and diagnosis aspects.