Uterine Segment (uterine + segment)

Distribution by Scientific Domains

Kinds of Uterine Segment

  • lower uterine segment

  • Selected Abstracts

    Coexistent atypical polypoid adenomyoma and complex atypical endometrial hyperplasia in the uterus

    Ayako Horita M.D.
    Abstract We report a case of atypical polypoid adenomyoma (APA) concomitantly identified with complex atypical endometrial hyperplasia (CAH) in the uterus. Since an initial endometrial smear revealed atypical endometrial cells, a diagnosis of CAH was made. Even though a concomitantly performed uterine cervical smear contained both atypical epithelial and stromal cells, the diagnosis of APA was not initially made because the cytological criteria for APA had not been established. Histologically, we recognized both CAH in the uterine corpus and APA in the lower uterine segment in the hysterectomy material. Retrospectively, the cells in the first cervical smear were interpreted as part of APA because the same types of cells were observed in the intraoperative cytology sample. Although the APA and CAH lesions were interposed by normal endometrium, estrogen was suspected to be the common etiological factor. Reports regarding the cytology of APA are currently scarce. To our knowledge, this is the first report showing cytological presentation of association of APA with CAH in addition to the first cervical smear of APA containing both epithelial and stromal components. Identification of abnormal proliferation of epithelium and stromal cells of smooth muscle origin is useful in the cytological diagnosis of APA. Diagn. Cytopathol. 2010. © 2009 Wiley-Liss, Inc. [source]

    Postradical vaginal trachelectomy follow-up by isthmic-vaginal smear cytology: A 13-year audit

    Zeina Ghorab M.D.
    Abstract Radical trachelectomy is a fertility preserving alternative for early cervical cancer patients. This audit assesses the role of isthmic-vaginal smear in postoperative follow-up. A total of 94 patients were identified generating 913 smears. The final surgical margin was at the lower uterine segment in 37 cases (39.4%) and significantly correlated with the presence of lower uterine segment endometrial cells (LUSEC) in smears (P = 0.035). The most common abnormal diagnoses in the presence of LUSEC were ASC-US and AGUS seen in 14.2% and 11.9% of positive smears, respectively. The most common follow-up pattern was initial positive smears, which converted to negative (45.7% of patients), showing that reactive changes are another potential overcall pitfall. The only 2 central recurrences were successfully diagnosed by smears. This study summarizes our experience, emphasizing the role of isthmic-vaginal smears for early detection of central recurrence and highlighting the role of LUSEC and reactive changes as potential overcall pitfalls. Diagn. Cytopathol. 2009. © 2009 Wiley-Liss, Inc. [source]

    Cervicovaginal (Papanicolaou) smear findings in patients with malignant mixed Müllerian tumors

    Mary B. Casey M.D.
    Abstract Malignant mixed Müllerian tumor is a rare neoplasm that occurs most frequently in elderly patients. It is characterized by a mixture of malignant epithelial and sarcomatous components. Little has been published about Papanicolaou smear findings pertaining to malignant mixed Müllerian tumors. We present our experience, with an emphasis on cytologic detail. Nine patients (median age, 65 yr) met our study criteria. All available smears and surgical specimens were reviewed. Four smears were positive for malignancy, with a sensitivity of 44% (3 adenocarcinoma, and 1 squamous-cell carcinoma, small-cell type). The results of our study showed that Papanicolaou smear findings pertaining to malignant mixed Müllerian tumors are seen in patients with advanced-stage disease with involvement of the lower uterine segment or cervix. The usual finding is large numbers of high-grade epithelial malignant cells in a necrotic background. The mesenchymal component rarely sheds cells visible on Papanicolaou smear. Diagn. Cytopathol. 2003;28:245,249. © 2003 Wiley-Liss, Inc. [source]

    Inhibitory effects of desflurane and sevoflurane on oxytocin-induced contractions of isolated pregnant human myometrium

    K. Yildiz
    Background:, In this study, we investigated the inhibitory effects of desflurane and sevoflurane on oxytocin-induced contractions of isolated human myometrium. Methods:, Following delivery of the infant and placenta, a small segment of myometrium was excised from the upper incisional surface of the lower uterine segment and 20 strips, randomly assigned into two groups (n = 10), were obtained from 20 non-laboring term parturients. The study protocol consisted of a 60-min period of spontaneous contractions, control recording with oxytocin 2 × 109 m (10-min period), washout interval of 10 min, volatile administration (three times per 15-min period) of 0.5, 1 and 2 minimum alveolar concentration (MAC), response to oxytocin (10-min period), a further washout interval (10-min period) and subsequent control recording with oxytocin without anesthetics. Results:, After oxytocin administration, the frequency and amplitude of contractions increased (P < 0.05) and the duration decreased (P < 0.05). The frequency and amplitude of contractions induced with oxytocin decreased significantly at 0.5, 1 and 2 MAC of desflurane and sevoflurane (P < 0.05). The amplitude of contractions was significantly different at 1 MAC between the two groups (P < 0.05). The duration of contractions at 2 MAC decreased in both groups (P < 0.05). Conclusions:, Desflurane and sevoflurane at 0.5, 1 and 2 MAC inhibit the frequency and amplitude of myometrial contractions induced with oxytocin in a dose-dependent manner. However, desflurane inhibits the amplitude less than sevoflurane at 1 MAC. We suggest that 0.5 MAC of both agents and 1 MAC of desflurane may be safely used in the presence of oxytocin following delivery of the infant and placenta during Cesarean section without fear of uterine atony and hemorrhage. [source]

    Epithelioid trophoblastic tumor of the uterus: Cytological and immunohistochemical observation of a case

    Seiryu Kamoi
    Epithelioid trophoblastic tumor (ETT) is a new entity of trophoblastic tumor and 14 such cases were reported by Shih and Kurman in 1998. However, only three subsequent cases supporting ETT have been reported. Recently, we experienced a case of ETT in a 37-year-old woman whose preoperative endometrial brushings showed atypical mononucleate giant cells and who underwent hysterectomy with the diagnosis of a uterine fibroid. The specimens revealed a 2.5 × 3.0 cm yellow,tan intramural nodule located in the lower uterine segment, which was composed of a neoplastic proliferation of intermediate trophoblasts in epithelioid arrangements. Immunohistochemically, the tumor cells were diffusely positive for cytokeratin and inhibin- ,, and focally positive for human chorionic gonadotropin and human placental lactogen. She presented an uneventful clinical course as of September 2001. [source]