[Mature teratoma with malignant differentiation treated with peritonectomy with HIPEC]

Background

Mature teratomas belong to the group of germ line ovarian tumors; they generally have benign behavior. Malignant transformation occurs in 0.2% to 1% of tumors. The objective is to show the results of peritonectomy with HIPEC in the treatment of a mature teratoma with malignant differentiation with signet ring cells.

Clinical case

43-year-old woman diagnosed with mature malignant teratoma with signet ring cells. It was performed optimal primary cytoreduction surgery, total hysterectomy, bilateral salpingo-oophorectomy, peritonectomy, appendectomy, cholecystectomy and splenectomy adding intraoperative hyperthermic chemotherapy (HIPEC).

Conclusions

Malignant transformation of a mature teratoma of the ovary is a rare event, but not exceptional. HIPEC was used after optimal cytoreduction, with good results, since the patient is in a disease-free period of 36 months. It is necessary to report cases in order to compare different types of treatment to improve oncological results.

Nomograms to Predict Overall and Cancer-Specific Survival in Gastric Signet-Ring Cell Carcinoma

BACKGROUND

The objective of our study was to develop and validate nomograms to predict the overall survival (OS) and cancer-specific survival (CSS) of patients with signet-ring cell carcinoma (SRCC) of the stomach.

METHODS

Data were collected from the Surveillance, Epidemiology, and End Results (SEER) database. A total of 1781 patients were randomly allocated to a training set (n = 1335) and a validation set (n = 446). Univariate and multivariate analyses were used to determine the prognostic effect of variables. Nomograms were developed to estimate OS and CSS and assessed using the concordance index (C-index), calibration curves, receiver operating characteristic (ROC), and decision curve analyses (DCA). DCA was utilized to compare the nomograms and the Tumor-Node-Metastasis (TNM) staging system.

RESULTS

Age, race, tumor size, T, N, M stage, and use of surgery and/or radiotherapy were included in the nomograms. C-indexes for OS and CSS were 0.74 and 0.75 in the training set, respectively. C-indexes for OS and CSS were 0.76 and 0.76 in the validation set. Calibration plots and receiver operating characteristic (ROC) curves showed good predictive accuracy. According to the decision curve analyses (DCA), the new model was more useful than the TNM staging system.

CONCLUSIONS

We developed nomograms to predict OS and CSS in patients with SRCC of the stomach. Nomograms may be a valuable clinical supplement of the conventional TNM staging system.

Primary Extra Mammary Paget's Disease of Vulva, With Apocrine Adenocarcinoma, Signet Ring Cell Differentiation and Distant Metastasis

Objective: Extramammary Paget's disease (EMPD) with invasive carcinoma and distant metastasis is extremely rare. In vulva EMPD associated apocrine carcinoma with signet ring cell differentiation has not been described in the literature so far. Its slow evolution, varied clinical presentation and histological appearances, lead to difficulty in diagnosis of this disease. Case report: We hereby report a case of primary EMPD with invasive carcinoma and distant metastasis in a 59-year-old female who presented with erythematous indurated plaque over vulva. Histopathology revealed Paget cell infiltration throughout the epidermis with invasive carcinoma in dermis and liver metastasis on CECT. The immunohistochemical expressions of CK7, CK20, GCDFP-15, CEA, p40, CDX 2, Her-2/ neu, AR, ER, were examined to explicate the cellular differentiation of this carcinoma. According to the histological assessment, this case was diagnosed as primary EMPD with apocrine adenocarcinoma, signet ring cell differentiation, vulva. Conclusion: Owing to poor prognosis, a high index of clinical suspicion along with histological and immunohistochemical assessment is of utmost importance in arriving at final diagnosis.

Bicytopenia and leukoerythroblastosis: a rare initial presentation of signet ring cell gastric adenocarcinoma

Gastric adenocarcinoma is a common neoplasia and is responsible for up to 30% of the overall deaths due to cancer. Advanced disease is mostly characterized by peritoneum, liver, and lung involvement. The spread of the disease to the bone is rare, and bone marrow dissemination is even rarer. In this setting, leukoerythroblastosis may be the initial manifestation of the disease. The authors report the case of a 64-year-old Caucasian man who sought medical care complaining of back pain, weakness, and weight loss. The physical examination revealed pallor, and the laboratory work-up depicted severe anemia and thrombocytopenia; the peripheral blood smear was consistent with leukoerythroblastosis. The ongoing investigation through a bone marrow biopsy showed massive involvement of the bone marrow by a signet ring cell adenocarcinoma. During hospitalization, the patient presented melena, and an upper digestive endoscopy depicted an ulcerated and infiltrative lesion in the cardia, upon which the histological examination revealed a signet ring cell adenocarcinoma. This case highlights the bone marrow invasion represented by bicytopenia and leukoerythroblastosis as the initial manifestation of this histological type of gastric cancer. Although treatment attempts were made with chemotherapy and radiotherapy, the patient died early on, showing the aggressive behavior of this form of tumoral presentation.