Articles: peritoneal-neoplasms-pathology.
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Korean J. Intern. Med. · Jan 1999
Case ReportsA case of primary leiomyosarcoma of the lesser omentum.
Leiomyosarcoma is a rare tumor that originates in the smooth muscle, usually in the gastrointestinal tract, the retroperitoneum and the genitourinary tract. The omentum has been rarely reported as a primary site of occurrence with leiomyosarcoma. A 72 year-old woman, with palpable mass on the left upper quadrant of abdomen and weight loss, was admitted to St. ⋯ A 12 x 8 x 8 cm-sized mass, originated from the lesser omentum, was discovered near the lesser curvature of the stomach. Microscopic examination revealed spindle-shaped cells with 7-8 mitoses per high power field. She was diagnosed as primary leiomyosarcoma originated from the lesser omentum.
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About 8% of our cases of mesothelioma occur in women, with a median age of 59 years. Our percentage is lower than other series reported in the literature because of the large number of occupationally exposed men referred to our laboratory. Tumor arose in the pleura in 86% of the women in our study, and the majority were epithelial. ⋯ An elevated tissue asbestos burden was noted in 70% of women from whom lung tissue was available for analysis. The main fiber type identified was amosite, followed by tremolite and chrysotile. These findings and those from other countries suggest a need for reassessment of the background rate of mesothelioma in industrialized nations.
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Changes in the dimensions of inhaled asbestos fibers in the lung and translocation of intrapulmonary asbestos fibers into mesothelial tissues were investigated in 17 baboons (5 exposed to amosite, 4 to chrysotile, 5 to crocidolite, and 3 unexposed). The animals received different cumulative doses of asbestos by inhalation, followed by varying recovery periods (0-69 months). All asbestos types induced pulmonary asbestosis with severity directly related to the cumulative dose. ⋯ The mean length of intrapulmonary chrysotile did not noticeably change with the extension of inhalation and recovery periods; however, the mean width decreased with the extension of these periods. This finding strongly suggested that separation of thick chrysotile fibers had occurred in the lung. The crocidolite standard sample (Transvaal) had a shorter geometric mean length (1.4 microns) than amosite.(ABSTRACT TRUNCATED AT 250 WORDS)
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We review our two-year experience with ultrasound-guided fine needle aspiration biopsy of omental pathology. Eleven patients were referred for biopsy of omental abnormalities. ⋯ The discharge diagnosis was ovarian carcinoma in 6 patients, adenocarcinoma of unknown origin in 1, lymphoma in 1, and carcinoma of the colon in 1. The technique requires the use of a linear array transducer for biopsy guidance, and is safe, rapid, and easy to perform.
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A prospective study analyzed the prevalence and severity of dysmenorrhea, intermenstrual pain and deep dyspareunia in relation to morphologic features of peritoneal disease in 73 consecutive women with endometriosis but no associated pelvic pathology, previous pelvic surgery or hormonal treatment. All underwent their first laparoscopy for chronic pelvic pain at the First Department of Obstetrics and Gynecology, University of Milan, Milan, Italy, between 1986 and 1989. Gynecologic pain symptoms were evaluated with a verbal score and visual analog scale. ⋯ When the three types of lesions were considered together, a statistically significant association was observed only with deep dyspareunia (P less than .01). Moreover, a significantly higher prevalence of deep dyspareunia was revealed in patients with typical versus atypical lesions (P less than .01) and in those with mixed versus atypical lesions (P less than .05). Fresh, papular, atypical lesions exposed to peritoneal fluid might cause functional pain, whereas "old," black nodules immersed in infiltrating scars might provoke mainly organic pain.