Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Adenosarcoma”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 199 records · Page 11Linked to original sources
PubMed1977

[Mullerian adenosarcoma and uterine adenofibroma].

Description of a case of a mixed Mullerian tumour of the body of the uterus, with histologically benign epithelial and connective components, developing in a 72-year-old woman. A cervical recurrence and perineal metastasis were solely leiomyomatous in terms of their structure and were associated with peritoneal carcinomatosis and pulmonary involvement. Death occurred three years after subtotal hysterectomy and five years after the first clinical manifestations.

Adenofibroma↗
PubMed2000

Adenomyofibroma of the endometrium with skeletal muscle differentiation.

A case of adenomyofibroma with skeletal muscle differentiation is described. A 55-year-old asymptomatic woman had atypical glandular cells of undetermined significance on a routine Papanicolaou smear. The endometrial biopsy revealed fragments composed of benign endometrial glands and myofibromatous stroma with foci of skeletal muscle differentiation. The stroma exhibited focal mild cytologic atypia and hypercellularity without periglandular cuffing or mitoses. Electron microscopy and immunohistochemical staining for myoglobin confirmed the skeletal muscle differentiation. A diagnosis of low-grade adenosarcoma with heterologous differentiation was made in the biopsy specimen based on the atypical stroma, the skeletal muscle differentiation, and previous observations that adenosarcomas may contain bland areas indistinguishable from an adenofibroma. The patient underwent hysterectomy, bilateral salpingo-oophorectomy, and pelvic lymphadenectomy. The hysterectomy specimen revealed small foci of residual tumor. In light of these findings the diagnosis was revised to adenomyofibroma with skeletal muscle differentiation. Uterine adenomyofibroma with skeletal muscle differentiation should be distinguished from a low-grade adenosarcoma in an endometrial biopsy.

Adenofibroma↗
PubMed1992

Transcriptional analysis of the mts1 gene with specific reference to 5' flanking sequences.

The mts1 gene is specifically expressed in certain metastatic tumors but not in their nonmetastatic counterparts. It is also expressed in several normal cell and tissue types that exhibit the ability to be motile. The gene was cloned from both mouse and human sources and the 5' flanking regions were sequenced. The sequencing data revealed a 135-base-pair region of high homology between the mouse and human mts1 gene. This homology was observed in the vicinity of the TATA box. The 5' region of the mts1 gene was also observed to have a high degree of homology to some known promoter and enhancer sequences. To determine the role this region plays in regulating the transcription of mts1, promoter analysis was performed. Sixteen constructs were prepared in which the chloramphenicol acetyltransferase gene was fused to different regions of the mouse mts1 promoter. These constructs were analyzed in transient transfection assays in two related cell lines derived from mouse mammary adenosarcomas: CSML-0, a nonmetastatic cell line with low levels of mts1 expression, and CSML-100, a metastatic cell line with high levels of mts1 expression. Results of our transient transfection assays in conjunction with results obtained from in vitro and in vivo footprinting of the promoter region show no evidence of cis-acting control elements important for the transcriptional regulation of mts1 in these cell lines. A few nucleotides upstream of the TATA box are sufficient for maximal levels of mts1 transcription. Because no cis-acting control elements were found, restriction of mts1 transcription in CSML-0 cells must exist on some other level. mts1 was found to be hypermethylated in CSML-0 cells but not in CSML-100 cells. The possible role of methylation in progression of the nonmetastatic CSML-0 adenosarcoma cell line toward the metastatic CSML-100 adenosarcoma cell line is discussed.

Animals↗
PubMed1999

The stromal component of large endometrial polyps.

Benign endometrial polyps belong in the differential diagnosis of adenofibroma and adenosarcoma. There is, however, little information about the range of stromal mitotic activity, stromal cellularity, and stromal atypia in benign endometrial polyps, rendering the differential diagnosis with the aforementioned tumors problematic. In this study, the stroma of 66 polyps 1 cm or more in greatest dimension from 56 patients was analyzed for stromal mitotic activity, cellularity, and atypia. Sixteen (24%) had an almost completely fibrotic stroma that had rare mitoses, little cellularity, and no atypia. However, 50 polyps (76%) had stroma that was predominantly endometrial or was a mixture of endometrial-type stroma and fibrous stroma. In these polyps stromal mitoses were relatively common, averaging 1.2/10 MFs/HPFs (range, 0-5.8 MFs/10 HPFs). Stromal cellularity was frequently equal to or mildly increased over adjacent nonpolypoid endometrial stroma and mild nuclear atypia (enlarged stromal nuclei) was also common. Twelve polyps (24%) from the group of 50 had two or more MFs/10 HPFs, a mitotic rate present in some adenosarcomas. None of these polyps had other features necessary for the diagnosis of adenofibroma or adenosarcoma and follow-up in all patients was uneventful (average follow-up, 96 months). It is concluded that benign polyps that retain areas of endometrial-type stroma often have mitotic activity and that significant stromal mitotic activity (> or = 2 MFs/HPFs) is relatively common. These polyps do not have significant stromal atypia nor do they have a marked increase in stromal cellularity. Thus, in the absence of other supportive features, stromal mitotic activity alone should not be regarded as a worrisome finding.

Adult↗
PubMed2000

Uterine adenomyomas excluding atypical polypoid adenomyomas and adenomyomas of endocervical type: a clinicopathologic study of 30 cases of an underemphasized lesion that may cause diagnostic problems with brief consideration of adenomyomas of other female genital tract sites.

We report 30 uterine tumors composed of an admixture of endometrioid glands, endometrioid stroma, and smooth muscle that lacked the characteristic features of atypical polypoid adenomyoma. The patients ranged from 26 to 64 (median 47) years of age. The usual presenting symptom was abnormal vaginal bleeding, which was "massive" in two patients. Six patients were treated by polypectomy only, with hysterectomy performed in the remainder. Twenty-seven adenomyomas were in the corpus (22 submucosal, two mural, and three subserosal) and three in the cervix. The subserosal and submucosal examples were polypoid. The tumors were 0.3 to 17 cm in greatest dimension, and firm with cystic areas often present on sectioning. Focal hemorrhage was described in five cases. On microscopic examination, the tumors were composed of glands and cysts lined by endometrial-type epithelium separated by endometrial stroma and smooth muscle, with smooth muscle predominating. Minor foci of tubal-type epithelium (14 cases), mucinous endocervical-type epithelium (2 cases), and squamous epithelium (1 case) were present. The smooth muscle component was cellular in three cases and contained occasional bizarre nuclei in three cases. The epithelial cells were uniformly bland. No mitotic activity was observed in the epithelial or mesenchymal elements in 20 cases. In the remainder, up to 5 mitotic figures/10 high-power fields were observed in the epithelium (3 cases), the stroma and smooth muscle (3 cases), or both compartments (4 cases). Follow-up in 14 cases revealed no recurrence or extrauterine spread in any case. A diagnosis of adenocarcinoma or adenosarcoma was entertained by the submitting pathologist in five of 14 consultation cases. Adenomyomas are unusual benign uterine tumors that can be misdiagnosed, in part, because the lesion has not often received attention in the literature. The most realistic considerations in the differential diagnosis are atypical polypoid adenomyoma and adenosarcoma. The former, by definition, has epithelial atypia and the latter a malignant (usually low grade) stromal component with typically absent or inconspicuous smooth muscle. Distinction of adenomyoma from adenosarcoma may have significant therapeutic implications, particularly in young women.

Adenomyoma↗
PubMed2004

ERBB-2 gene overexpression and amplification in uterine sarcomas.

BACKGROUND: The aim of this study was to determine ERBB-2 (HER-2/neu) gene alterations in different subtypes of uterine sarcomas. METHODS: After central review, representative biopsies were immunohistochemically stained and semiquantitatively scored as negative, weakly (1+), moderately (2+), or strongly (3+) positive. Subsequently, fluorescence in situ hybridization (FISH) was performed on cases with 2+ and 3+ expression. RESULTS: Seventy tumors (52 primaries and 18 recurrent) were evaluated. All 10 adenosarcomas, 21 endometrial stromal sarcomas, and 10 leiomyosarcomas were negative both in the primary and recurrent setting. Twenty-two primary carcinosarcomas were scored. The epithelial component was negative/1+ in 16 (73%), 2+/3+ in five (22.5%) tumors, and could not be evaluated in one case (4.5%), whereas the sarcoma component stained negative/1+ in 21 cases (95.5%) and 3+ (4.5%) in one case. In two recurrent carcinosarcomas, the epithelial component stained 3+ in both cases, whereas the sarcoma component scored negative and 1+. Amplification of the ERBB-2 gene as determined by FISH was observed in 3/7 (43%) carcinosarcomas with 2+ or 3+ overexpression, resulting in an overall 3/22 (14%) amplification rate. One out of four undifferentiated uterine sarcomas stained 2+. ERBB-2 immunopositivity (3+) and ERBB-2 amplification by FISH were confirmed in the recurrent tumor, resulting in a gene amplification rate of 1/4 in undifferentiated uterine sarcomas. CONCLUSION: The current results suggest absence of ERBB-2 overexpression in uterine leiomyosarcoma, uterine adenosarcoma, and endometrial stromal sarcoma, whereas the ERBB-2 gene might have a biologic role in uterine carcinosarcoma and undifferentiated uterine sarcomas.

Adenosarcoma↗
PubMed2004

Polypoid endometriosis: a clinicopathologic analysis of 24 cases and a review of the literature.

We describe 24 cases of polypoid endometriosis, most of which were referred because of problems in differential diagnosis, particularly distinction from a low-grade müllerian neoplasm. The patients were 23 to 78 years (mean 52.5 years) of age. Seven patients were on unopposed estrogen, four on combined estrogen-progestin therapy, and one patient had a synchronous ovarian thecoma. The most common clinical presentations were a pelvic mass, vaginal polypoid masses, and large bowel obstruction. In some cases, the intraoperative findings suggested a neoplasm. Sites of involvement in order of frequency included colon, ovary, uterine serosa, cervical and/or vaginal mucosa, ureter, fallopian tube, omentum, bladder, paraurethral and paravaginal soft tissue, and retroperitoneum. Multiple sites were involved in seven cases. Five cases occurred within ovarian or extraovarian endometriotic cysts. The lesions ranged up to 14 cm in size and formed polypoid, pink, gray or tan, masses. On microscopic examination, the polypoid masses were composed of an admixture of endometriotic glands and stroma. A variety of glandular architectural patterns were observed, sometimes in combination, most commonly cystic and noncystic simple hyperplasia, but also simple or complex hyperplasia with atypia, disordered proliferative, and cystic atrophy. Various types of epithelial metaplasia (tubal, mucinous, squamous, papillary syncytial metaplasia) were common. Hemorrhage, fibrosis, prominent thick-walled blood vessels, hemosiderin-laden histiocytes, and decidual change were also present in some cases. Eighteen cases were associated with usual (nonpolypoid) endometriosis. In one case, polypoid endometriosis merged with a mucinous borderline tumor of endocervical-type. In all but two cases, polypoid endometriosis lacked periglandular stromal hypercellularity, stromal atypia, and intraglandular stromal papillae, helping distinguish it from adenosarcoma. Focal intraglandular stromal papillae were noted in two cases with focal mild periglandular stromal hypercellularity in one of them, but no stromal atypia was present in either case. Follow-up data in 17 patients indicated that 15 patients were alive without evidence of residual disease, 1 was alive with residual endometriosis, and 1 died of other causes. In conclusion, polypoid endometriosis is a rare manifestation of endometriosis that may be mistaken for a neoplasm on clinical, intraoperative, or pathologic assessment. Some cases may be attributable to exogenous hormones or hyperestrinism and, like conventional endometriosis, some may evolve into a premalignant or, rarely, a neoplastic lesion. The main lesion in the differential is a müllerian (mesodermal) adenosarcoma.

Adenosarcoma↗
PubMed2003

Uterine neoplasia in 13 cats.

Thirteen uterine tumors were diagnosed in 13 cats and accounted for 0.29% of all feline neoplasms received during a 9.6-year period. Age at diagnosis ranged from 3 to 16 years; median 9 years. Six were Domestic Shorthair cats, and 7 were purebred cats of 5 different breeds. Eight adenocarcinomas and 1 mixed Müllerian tumor (adenosarcoma) comprised the endometrial tumors. Myometrial tumors included 3 leiomyomas and 1 leiomyosarcoma. One of the adenocarcinomas developed in the uterine stump of an ovariohysterectomized cat; the other cats were sexually intact. Concurrent mammary adenocarcinoma was diagnosed in 1 cat with uterine adenocarcinoma and in another with uterine leiomyoma. Tumors were discovered during elective ovariohysterectomy in 2 cats, but at least 3 others had experienced reproductive problems (infertility or pyometra). Five cats presented for abdominal or pelvic masses. Endometrial adenocarcinomas were positive immunohistochemically for cytokeratins and negative for smooth muscle actin (SMA): 1 of 6 cats was positive for vimentin and 4 of 8 were positive for estrogen receptor-alpha (ER alpha). Adenosarcoma stromal cells were positive for vimentin and ER alpha but negative for cytokeratins and SMA. Smooth muscle tumors were positive for vimentin and SMA and negative for cytokeratins. Leiomyomas, but not the leiomyosarcomas, were positive for ER alpha. Adenocarcinomas in 4 cats had metastasized by the time of ovariohysterectomy. Two other cats were euthanized 5 months after ovariohysterectomy; at least one of these cats had developed an abdominal mass that was not examined histologically. Only 2 cats with endometrial adenocarcinoma had disease-free intervals longer than 5 months after surgery. Metastasis was not detected in any mesenchymal tumor; however, these cats were either euthanized on discovery of the tumor or the tumor was first detected at necropsy.

Adenocarcinoma↗
PubMed2004

Spontaneous proliferative lesions and tumors of the uterus of captive African hedgehogs (Atelerix albiventris).

Fifteen captive female African hedgehogs (Atelerix albiventris), 3- to 5-yr-old, were diagnosed with proliferative uterine lesions (n = 28). Lesions were associated with vaginal bleeding in all cases, hematuria in 11 of 13 cases, and weight loss in 7 of 12 cases. Lesions were multiple in eight cases and single in seven cases. The lesions identified were 13 adenosarcomas, 7 endometrial stromal sarcomas, 6 endometrial polyps, 1 adenoleiomyosarcoma, and 1 adenoleiomyoma. In one animal with adenosarcoma, peritoneal seeding was detected at the time of hysterectomy. Mean survival time was 303 days (n = 10). Ovariohysterectomy allows prolonged survival of hedgehogs with uterine tumors.

Adenosarcoma↗