Publications by authors named "Masaki Kamio"

Background: The standard for robotic para-aortic lymphadenectomy has not been fully established. Para-aortic lymphadenectomy performed by sharing the same ports with pelvic procedures, a procedure known as dual-docking surgery, can be performed using the latest robotic system. We prospectively examined the ability of standardized dual-docking robotic surgery in endometrial cancer patients.

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Article Synopsis
  • * Conducted in two steps, the research verifies optimum sample storage conditions and compares HPV test results from self-collected urine and vaginal samples with traditional clinician-collected cervical samples among 121 participants.
  • * Results show that while urine samples had lower HPV detection rates, the testing methods exhibited varying degrees of concordance, with self-collected vaginal samples showing better agreement with cervical testing compared to urine.
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Objective: This preliminary study aimed to assess the detection accuracy of sentinel lymph node metastasis in cervical cancer using quantitative reverse transcriptase-polymerase chain reaction.

Methods: We collected cervical cancer tissues and 70 pelvic lymph node samples from patients with cervical cancer. The quantitative reverse transcriptase-polymerase chain reaction assay was performed to investigate the expression of cytokeratin 19 mRNA in cervical cancer tissues and determine the cutoff value of cytokeratin 19 mRNA between the non-metastatic and metastatic lymph nodes.

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Vulvar proximal-type epithelioid sarcoma during pregnancy is extremely rare; only two reports are available to date. Herein, we describe a 36-year-old woman who presented with a pigeon-egg-sized solid mass with cystic component on the left labia majora at 18 weeks of gestation. The patient underwent tumor resection at 23 weeks of gestation and was diagnosed with epithelioid sarcoma, proximal-type.

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It is often difficult to histologically differentiate among endometrial dedifferentiated carcinoma (DC), endometrioid carcinoma (EC), serous carcinoma (SC), and carcinosarcoma (CS) due to the presence of solid components. In this study, we aimed to categorize these carcinomas according to The Cancer Genome Atlas (TCGA) classification using a small custom-made cancer genome panel (56 genes and 17 microsatellite regions) for integrated molecular diagnosis. A total of 36 endometrial cancer cases with solid components were assessed using IHC, next-generation sequencing (NGS), and the custom-made panel.

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Objective: To evaluate the accuracy of the one-step nucleic acid amplification (OSNA) assay for the diagnosis of lymph node (LN) metastasis in uterine cancer.

Methods: A total of 116 LNs from 30 patients with cervical and endometrial cancer, enrolled in this prospective study, were used. Excised LNs were cut into 4 to 6 blocks at 2 mm intervals, and nonadjacent blocks were alternately subjected to either histological examination or the OSNA assay.

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Background: We aimed to compare the detection rate of pelvic sentinel lymph node between the radio-isotope with 99m technetium (99mTc)-labeled phytate and near-infrared fluorescent imaging with indocyanine green in patients with endometrial cancer.

Methods: This study included 122 patients who had undergone sentinel lymph node mapping using 99mTc and indocyanine green. In the radio-isotope method, sentinel lymph nodes were detected using uterine cervix 99mTc injections the day before surgery.

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Objective: To determine the significance of zinc supplementation for zinc deficiency during chemotherapy for gynecologic malignancies.

Methods: Twenty-eight patients suspected of zinc deficiency before chemotherapy were prospectively evaluated. Gustatory test, serum zinc, blood count, and biochemical examinations were made pre-chemotherapy at 3- and 6-week intervals.

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Background: The recent improvements in anti-cancer therapy following first-line treatment can potentially impact post-progression survival. We evaluated the factors that influence post-progression survival in advanced recurrent ovarian cancer.

Methods: Eighty-nine patients who underwent first-line treatment between June 2005 and December 2017 were included.

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Cervical elongation in patients with pelvic organ prolapse (POP), who previously underwent laparoscopic sacrocolpopexy (LSC), is not fully understood. We report a case of a second surgery for endometrial cancer complicated with POP recurrence, which seemed to be related to cervical elongation following LSC. A 65-year-old woman was referred for invasive treatment following LSC.

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Objective: This study aimed to examine the associations of cone margin and human papillomavirus (HPV) status after conization with cytological abnormalities and disease recurrence in patients with cervical intraepithelial neoplasia grade 3 (CIN3).

Methods: This is a retrospective study of 366 women with CIN3 who underwent conization at Kagoshima University Hospital between 2004 and 2017. Conization was performed using an ultrasonic scalpel.

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Background: Although Clostridium difficile infection (CDI) often results in severe manifestations due to toxin-producing clostridium, the correlation between CDI and having a fever in gynecological malignancies is not completely understood.

Aims: The incidence, and clinical features, and clinical management of CDI in patients with gynecological malignancies who have fevers were investigated, and the clinical managements of this complication are discussed.

Methods And Results: We retrospectively reviewed 485 patients newly diagnosed with invasive gynecological cancers who underwent anticancer treatment between July 2012 and December 2016.

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Background: Liquid-based cytology (LBC) is now a widely used method for cytologic screening and cancer diagnosis. Since the cells are fixed with alcohol-based fixatives, and the specimens are stored in a liquid condition, LBC specimens are suitable for genetic analyses.

Methods: Here, we established a small cancer gene panel, including 60 genes and 17 microsatellite markers for next-generation sequencing, and applied to residual LBC specimens obtained by endometrial cancer screening to compare with corresponding formalin-fixed paraffin-embedded (FFPE) tissues.

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Objective: To evaluate the feasibility, safety and surgical outcomes of laparoscopic surgery for the treatment of low-risk endometrial cancer.

Methods: Of 155 patients with low-risk endometrial cancer, who were included in this retrospective study between May 2008 and March 2017, 82 and 73 underwent laparoscopic and open surgery, respectively. Clinicopathological and surgical data, recurrence-free survival and overall survival were analyzed.

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Objective: Lymph node (LN) metastasis is among the important prognostic factors for survival in endometrial cancer (EC). This study aimed to evaluate the occurrence of lymphatic complications following lymphadenectomy in patients with EC.

Materials And Methods: EC patients were retrospectively evaluated.

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Background: Endometrial cancer is the most common gynecologic cancer, and lymph node metastasis is one of the most important prognostic factors. Increasing evidence shows that sentinel lymph node (SLN) mapping is an effective alternative to comprehensive lymphadenectomy. Single photon emission CT with computed tomography (SPECT/CT) is associated with a high SLN detection rate.

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Background: Sentinel node navigation surgery (SNNS) has been frequently used in early cervical cancer. However, the incidence and potential reduction of lymphatic complications following the removal of the sentinel lymph node remain unknown. Thus, this study aimed to evaluate the occurrence of lymphatic complications post sentinel node navigation surgery in patients with early cervical cancer.

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Sex cord tumor with annular tubules (SCTAT) is rare, and 20% of SCTAT cases, excluding those associated with Peutz-Jeghers syndrome, are clinically malignant. Limited data is available regarding the role of chemotherapy in the management of SCTAT. We encountered a 44-year-old woman with recurrent SCTAT complicated by peritoneal dissemination following a right adnexectomy.

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Background: The purpose of this study was to determine the learning curve of laparoscopic surgery for the treatment of early endometrial cancer and report the surgical outcomes.

Methods: Patients: Data were retrospectively extracted from the medical charts of patients who underwent laparoscopic surgery.

Intervention: Laparoscopic surgery, including pelvic lymphadenectomy, was performed using the same technique and instruments for all patients.

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Objective: The detection accuracy of sentinel lymph node (SLN) metastasis by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) for endometrial cancer (EC) remains unclear and was assessed in this preliminary study.

Methods: We studied primary cancer tissues and pelvic lymph nodes (PLN) from 105 patients with EC. qRT-PCR assay was performed to determine the copy numbers of CK19 mRNA in EC tissues, and negative and positive LN samples.

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Background: The purpose of this study was to evaluate the occurrence of lymphatic complications following pelvic lymphadenectomy (PLA) in patients with cervical cancer.

Methods: A retrospective study of 169 cervical cancer patients was conducted. Lower extremity lymphedema (LEL) was diagnosed using the International Society of Lymphology guidelines, and pelvic lymphocele (PL) was evaluated using trans-vaginal ultrasonography and computed tomography.

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Aims: Closure of the vaginal stump in total laparoscopic hysterectomy (TLH) performed by interrupted suture is time-consuming and requires sufficient experience. Stratafix (SF) is a new type of antibacterial monofilament absorbable suture which has multiple small anchors on the string surface. There is no information concerning the efficacy of SF for vaginal stump suture in minimally invasive hysterectomy.

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