The uterine sarcomas form a group of malignant tumors that arises from the smooth muscle or connective tissue of the uterus. Signs and symptoms
Clinically, uterine sarcomas and leiomyomas (fibroids) both have similar symptoms such as increased uterine size, abdominal pain and vaginal bleeding so it can be difficult to tell them apart. Unusual or postmenopausal bleeding may be a sign of uterine sarcoma and needs to be investigated. Other signs include pelvic pain, pressure, and unusual discharge. A nonpregnant uterus that enlarges quickly is suspicious. However, none of the signs are specific. Specific screening test have not been developed; a Pap smear is a screening test for cervical cancer and not designed to detect uterine sarcoma. Histology
Tumoral entities include leiomyosarcomas, endometrial stromal sarcomas, carcinosarcomas and "other" sarcomas. If the lesion originates from the stroma of the uterine lining it is an endometrial stromal sarcoma. If the uterine muscle cell is the originator the tumor is a uterine leiomyosarcoma. Carcinosarcomas comprise both malignant epithelial and malignant sarcomatous components. Diagnosis
By using T2*-weighted imaging, MRI is able to differentiate distinguishing features of leiomyomas from uterine sarcomas. Investigations by the physician include imaging (ultrasound, CAT scan, MRI) and, if possible, obtaining a tissue diagnosis by biopsy, hysteroscopy, or D&C. Ultimately the diagnosis is established by the histologic examination of the specimen. Typically malignant lesions have >10 mitosis per high power field. In contrast, a uterine leiomyoma as a benign lesion would have < 5 mitoses per high power field.
Definition and related terms
There is one globally recognized approach for defining and measuring hunger generally used by those studying or working to relieve hunger as a social problem. This is the United Nations FAO measurement, which is typically referred to as chronic undernourishment (or in older publications, as food deprivation, chronic hunger, or just plain hunger.) For the FAO:

Hunger or chronic undernourishment exists when "caloric intake is below the minimum dietary energy requirement (MDER). The MDER is the amount of energy needed to perform light activity and to maintain a minimum acceptable weight for attained height." The FAO use different MDER thresholds for different countries, due to variations in climate and cultural factors. Typically a yearly "balance sheet" approach is used, with the minimum dietary energy requirement tallied against the estimated total calories consumed over the year. The FAO definitions differentiate hunger from malnutrition and food insecurity:
Malnutrition results from  "deficiencies, excesses or imbalances in the consumption of macro- and/or micro-nutrients." In the FAO definition, all hungry people suffer from malnutrition, but people who are malnourished may not be hungry. They may get sufficient raw calories to avoid hunger but lack essential micronutrients, or they may even consume an excess of raw calories and hence suffer from obesity. Food insecurity occurs when people are at risk, or worried about, not being able to meet their preferences for food, including in terms of raw calories and nutritional value.