Machine learning-driven survival prediction in gestational trophoblastic neoplasms: a focus on PSTT and ETT prognosis.

Introduction: The clinicopathological characteristics and prognosis of placental site trophoblastic tumor (PSTT) and epithelioid trophoblastic tumor (ETT) have not been well summarized. Consequently, we conducted the largest to date series of samples of both types and employed machine learning (ML) to assess treatment effectiveness and develop accurate prognostic models for patients with GTN. Gestational choriocarcinoma (GCC) was used as the control group to show the clinical features of PTSS and ETT. Methods: The Surveillance, Epidemiology, and End Results (SEER) database provided the data used for this study's analysis. To identify the prognostic variables, we conducted Cox regression analysis and constructed prognostic models using five ML algorithms to predict the 5-year survival. A validation method incorporating the area under the curve (AUC) of the receiver operating characteristic (ROC) curve was used to validate the accuracy and reliability of the ML models. We also investigated the role of multiple therapeutic options using the Kaplan-Meier survival analysis. Results: The study population comprised 725 patients. Among them, 139 patients had ETT, 107 had PSTT, and 479 had GCC. There were no significant differences in survival between the different tumor groups. Multivariate Cox regression analysis revealed that metastasis was a significant prognostic factor for GCC, while older age and radiotherapy were significant prognostic factors for PTSS and ETT. ML models revealed that the Gradient Boosting classifier accurately predicted the outcomes, followed by the random forest classifier, K-Nearest Neighbors, Logistic Regression, and multilayer perceptron models. The most significant contributing factors were tumor size, year of diagnosis, age, and race. Discussion: Our study provides a method for treatment and prognostic assessment of patients with GTN. The ML we developed can be used as a convenient individualized tool to facilitate clinical decision making.

What is the optimal (neo)adjuvant strategy of extremity high-risk soft tissue sarcomas (ESTS)?

Currently, the standard treatment for extremity high-risk soft tissue sarcomas (ESTS) combines surgery and pre- or post-op radiation therapy (RT). In some selected cases, chemotherapy (CT) is incorporated into the therapeutic algorithm as a neoadjuvant approach to enable conservative management. Given the risk of local or metastatic relapse, this paper discusses the potential benefits of CT and RT in high-grade ESTs. The role of adjuvant chemotherapy in addition to neoadjuvant CT, the prognostic value of the pathological response to neoadjuvant treatment, and the role for an adjuvant "boost" following resection after pre-operative radiotherapy will be discussed.

[Evaluation of the practice of prescribing oral chemotherapy type "Capecitabine" by medical oncologist: A first study from Morocco]. / Évaluation de la pratique de prescription d'une chimiothérapie orale type « capécitabine ¼. Résultats de la première enquête auprès des oncologues médicaux marocains.

INTRODUCTION: Oral anticancer therapy is becoming increasingly developed; their prescription has become a common practice in oncology. However, there is a variability and diversity in prescription practice. Its magnitude has been very little studied in scientific literature. To our knowledge, this is the first study in Morocco and North Africa to evaluate the practice of prescribing oral chemotherapy. METHODS: The authors conducted a national exhaustive cross-sectional survey, to evaluate the practice of the oral chemotherapy "Capecitabine" type prescription by Moroccan oncologists and to identify strategies to promote an adherence to oral anti-neoplasic therapy. RESULTS: Ninety-one medical oncologists answered out of 118, from public oncology centres (29.7%), Hospital University (58.2%), and private sector (12.1%). Thirty-four of the oncologists replied by email, 33 through phone conversation and 24 by filling paper questionnaires. In total, 32% of the cases were handwritten prescriptions, and 51.6% electronically generated. Forty-six percent of medical oncologists dedicated more time to the oral chemotherapy type Capecitabine prescription versus its intravenous equivalent 5FU. However, 33% medical oncologists take less time to this prescription, and 20.9% of them take the same time. Adherence to oral chemotherapy was evaluated by simply questioning of patients in most of the cases (94%) and 4% of medical oncologist declared that they did not evaluate this adherence. In total, 87.9% of Moroccan medical oncologists revealed that they have not received any specific training in the therapeutic education of the patient with oral anti-cancer treatment. CONCLUSION: In Morocco, there is a great variability in prescription and follow-up practice for patients receiving oral chemotherapy. There is a lack of a national standardization with regards to the procedures of prescribing and monitoring patients to ensure the quality and safety of the oral chemotherapy prescription.

[Toxidermy mimicking acute chemotherapy-induced lupus erythematosus]. / Une toxidermie mimant un lupus érythémateux aigüe chimio-induit.

Acute chemotherapy-induced lupus erythematosus (ALE) is rare. A few cases have been reported in the literature criminalizing capecitabine, paclitaxel and docetaxel. We report the case of a 64-year old female patient without a history of autoimmune diseases or of drug allergy followed up for invasive ductal carcinoma in the right breast immediately metastatized to the liver and to the lymph nodes. After AC60 first line chemotherapy regimen (a total of 6 cycles), she was treated with docetaxel at a dose of 100 mg/m2. After 5 cycles, she had diffuse erythematous lesions on both hands, forearms, cheeks and on the peribuccal area. She underwent corticosteroid therapy with sun protection and could continue the same chemotherapy until the eighth cycle. Patient's evolution was marked by the progression of the disease. She was treated with capecitabine at a dose of 1250 mg/m2 twice a day. After six cycles she had erythematosquamous and itchy patches on the face resembling the wings of a butterfly (Panel A, Panel B) with oral ulceration and digital pulpitis (Panel C). This initially suggested acute chemotherapy-induced cutaneous lupus erythematosus. Biopsy suggested lichenoid toxidermia. Immunological assessment was performed to exclude chemotherapy-induced cutaneous lupus erythematosus, which showed anti-native DNA antibodies and negative anti-histone antibodies. Anti-nuclear antibody test is positive at 320; this test may be positive in 50-70% of patients with breast cancer, ENT or lymphoma. In the light of these results the diagnosis of toxidermia was the more likely.

Conjonctival melanoma metastatic to the breast: a case report.

BACKGROUND: Breast metastasis is fairly uncommon and prognosis is dismal. Breast metastasis might be the first symptom or may occur during the course of other malignancies dominantly arising from the contralateral breast. Leukemia, lung cancer and conjunctival melanoma may spread to the breast. CASE PRESENTATION: A 43-year-old female patient was operated on for conjunctival melanoma. After two years the disease progressed quickly and cutaneous nodes appeared on the back and paraumbilical region. Physical and radiological examination showed a breast mass. No palpable lymph's nodes were noted. She underwent an open biopsy. Histopathologic examination and immunohistochemistry confirmed breast metastases from melanoma. During post-operative staging multiple nasopharyngeal and oropharyngeal lesions were also objective. The patient was given palliative dacarbazine (250 mg/m2 per day for 4 days) for 4 cycles. She died 4 months after the diagnosis of breast metastases. CONCLUSION: Histopathological evaluation should be mandatory in patients with medical history of malignancies in order to differentiate new primary tumors, metastases, and benign tumors.

Primary immature teratoma of the uterus relapsing as malignant neuroepithelioma: case report and review of the literature.

Background. Although some mature cases of teratomas have recently been described in the cervix, they are not commonly found in the uterus, especially in immature forms. An immature uterine teratoma relapsing after surgery as malignant neuroepithelioma has never been reported in the literature. Case Presentation. We describe a case of immature teratoma which occurred primarily in the uterus in a 56-year-old female. Treatment consisted of total simple hysterectomy. Three months after surgery, the patient relapsed with voluminous pelvic mass and was treated with bleomycin, etoposide, and cisplatin-containing chemotherapy regimen. Conclusion. In this report and according to the pertinent literature, clinical and pathological features and management of uterine immature teratomas are discussed. The mainstay of treatment is surgery. The prognosis of this unusual disease remains uncertain.

Common bile duct adenocarcinoma in a patient with situs inversus totalis: report of a rare case.

BACKGROUND: Situs inversus totalis represents an unusual anomaly characterized by a mirror-image transposition of the abdominal and thoracic viscera. It often occurs concomitantly with other disorders that make difficult diagnosis and management of abdominal pathology. The relationship between situs inversus totalis and cancer remains unclear. CASE PRESENTATION: We describe a 33-year old Guinean man with situs inversus totalis who presented with obstructive jaundice. Imaging and endoscopic modalities demonstrated a mass of distal common bile duct which biopsy identified an adenocarcinoma. The patient was successfully treated by cephalic pancreaticoduodenectomy followed by adjuvant chemoradiation and he is doing well without recurrence 8 months after surgery. CONCLUSION: The occurrence of bile duct adenocarcinoma in patient with situs inversus totalis accounts as a rare coincidence. In this setting, when the tumor is resectable, surgical management should be considered without contraindication and must be preceded by a careful preoperative staging.