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Primary Serous Cystadenocarcinoma of Broad Ligament: A Case Report with Laparoscopic, Histopathologic and Immunohistochemical Findings
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作者 Kenji Niwa Motoki Takenaka +8 位作者 Takeaki Saitake Tiger Koike kentaro nagata kentaro Niwa Kohjiro Niwa Sakae Mori Keigo Kuwabara Akane Onogi Takuji Tanaka 《Open Journal of Pathology》 2022年第1期22-30,共9页
An 86-year-old Japanese woman underwent an examining laparoscopy for removing the huge pelvic tumor. At laparoscope examination, the cystic tumor was found within the left broad ligament, while the ovaries, fallopian ... An 86-year-old Japanese woman underwent an examining laparoscopy for removing the huge pelvic tumor. At laparoscope examination, the cystic tumor was found within the left broad ligament, while the ovaries, fallopian tubes and uterus showed almost normal appearance. The tumor was removed together by total laparoscopic hysterectomy and bilateral salpingo-oophorectomies after the suction of serous content in the broad ligament. Cytological findings of the ascites suggested serous carcinoma. The resected ovaries and fallopian tubes were grossly and histologically normal. Histological examination of the solid part of broad ligament tumor, closely next to the fallopian tube, revealed a serous adenocarcinoma. Immunohistochemically, the tumor cells were strongly positive for CK7, WT-1, estrogen receptor, AE1/AE3 and EMA, and negative for CK20, D2-40 and calretinin. Also, they were negative for progesterone receptor and p53. The authors diagnosed the primary tumor as being a serous cystadenocarcinoma of the broad ligament [pTIC3NxM0, as modified and adapted to post-surgical staging of ovarian cancer (FIGO 2014)]. The patient has been receiving 6 cycles of adjuvant chemotherapies with one course with paclitaxel (PTX) and carboplatin (CBDCA) and five with PTX, CBDCA and Bevacizumab, and has no signs of recurrence and metastasis six months after the operation. 展开更多
关键词 Primary Broad Ligament Cancer Serous Cystadenocarcinoma IMMUNOHISTOCHEMISTRY Mullerian Tumor
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Primary Ovarian Carcinosarcoma: Cytological, Pathological, Immunocytochemical, and Immunohistochemical Features 被引量:1
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作者 Kenji Niwa Sakae Mori +6 位作者 Keigo Kuwabara kentaro nagata Motoki Takenaka Tomomi Shiga Yoshio Yamaguchi kentaro Niwa Takuji Tanaka 《Open Journal of Pathology》 2021年第1期22-31,共10页
<div style="text-align:justify;"> <span style="font-family:Verdana;">Ovarian carcinosarcoma composed of high-grade carcinoma and sarcoma is an extremely rare neoplasm and typically occu... <div style="text-align:justify;"> <span style="font-family:Verdana;">Ovarian carcinosarcoma composed of high-grade carcinoma and sarcoma is an extremely rare neoplasm and typically occurs in postmenopausal women aged over 60 years. A 73-year-old female, gravida three para three, presented to our hospital with right lower abdominal pain. Right pelvic solid tumor with ascites was detected on pelvic ultrasound examination. She underwent hysterectomy, bilateral salpingo-oophorectomy and partial omentectomy, but the tumor had invaded to the right ureter, and some fragile tumor could not be taken (sub-optimal surgery). On the imprint and ascitic cytology specimens during operation, atypical cells suggestive of adenocarcinoma and spindle atypical cells with immunocytochemically vimentin positive were found. The resected tumor was histopathologically carcinosarcoma consisted of serous adenocarcinoma, chondrosarcoma and fibrosarcoma. Immunohistochemical analysis revealed that adenocarcinoma cells were positive for AE1/AE3 and fibrosarcoma cells stained with vimentin. The final diagnosis was the right ovarian carcinosarcoma (stage pT3CNxMx). Microsatellite instability was stable and BRCA1/2 mutations could not be found in the carcinosarcoma cells. The patient was given four cycles of chemotherapy with paclitaxel, carboplatin and bevacizumab regimen, and thereafter she was treated with the ifosfamide and cisplatin because of slight elevation of serum CA125.</span> </div> 展开更多
关键词 OVARY CARCINOSARCOMA IMMUNOCYTOCHEMISTRY Immunohistochemistry IFOSFAMIDE Cisplatin
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Congenital Dysfibrinogenemia Presented with Massive Hematomas Formed after Hysterectomy
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作者 Kenji Niwa kentaro nagata +5 位作者 Takefumi Nakagami Ryuichiro Shimaoka kentaro Niwa Motoki Takenaka Takuji Tanaka Nobuo Okumura 《Case Reports in Clinical Medicine》 2021年第4期108-116,共9页
Congenital dysfibrinogenemia (CD) is a qualitative congenital fibrinogen (Fbg) disorder characterized by normal antigen levels of dysfunctional Fbg. A 41-year-old Japanese woman visited the emergent room of our hospit... Congenital dysfibrinogenemia (CD) is a qualitative congenital fibrinogen (Fbg) disorder characterized by normal antigen levels of dysfunctional Fbg. A 41-year-old Japanese woman visited the emergent room of our hospital due to acute and severe abdominal pain. Catheterization of the full bladder released her abdominal pain. Magnetic resonance imaging showed a huge pelvic mass, suggesting an intra-mural giant myoma. Before the removal operation of myoma, screening tests showed no abnormalities, including prothrombin time and activated partial thromboplastin time. However, Fbg level was not determined. The patient wanted to receive early surgical treatment, and an abdominal hysterectomy was performed as usual and the intra-operative blood loss was 100 g (ml). However, we found subcutaneous and pelvic hematomas, although active bleeding was not recognized on an emergent computed tomography examination. At that time, we noticed a low level of plasma Fbg (47 mg/dl). We performed a re-laparotomy to remove hematomas. All ligated blood vessels were re-ligated, and oozing points were vaporized. Around the re-operation, six units of fresh frozen plasma and twelve units of red blood cell suspension were transfused. The clinical course after the 2<sup>nd</sup> operation was uneventful except for the low level of Fbg. An additional study showed that the value of the Fbg activity and antigen was dissociated, and the patient was diagnosed CD with <span style="white-space:nowrap;">&gamma;</span>275 Arg to His (CGC to CAC) mutation. 展开更多
关键词 DYSFIBRINOGENEMIA ASYMPTOMATIC Major Bleeding Event γ275 Arg to His Mutation
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Primary Small Cell Neuroendocrine Carcinoma of the Endometrium: A Cytologically Diagnosed Case with Immunocytochemical, Immunohistochemical, and Electron Microscopic Features
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作者 kentaro nagata Kenji Niwa +5 位作者 Sakae Mori Keigo Kuwabara Motoki Takenaka Yoshio Yamaguchi kentaro Niwa Takuji Tanaka 《Open Journal of Pathology》 2020年第4期113-123,共11页
<div style="text-align:justify;"> <span style="font-family:Verdana;">Endometrial neuroendocrine tumors are rare, accounting less than 1% of endometrial cancers. They include small cell ... <div style="text-align:justify;"> <span style="font-family:Verdana;">Endometrial neuroendocrine tumors are rare, accounting less than 1% of endometrial cancers. They include small cell neuroendocrine carcinoma (NEC) and large cell NEC and usually occur in postmenopausal patients. Although common symptoms include postmenopausal bleeding, most patients are diagnosed at an advanced stage. We report an extremely rare case of small cell NEC developed in the endometrium of a 75-year-old Japanese woman. This case was initially suspected based on the findings of endometrial cytology: a number of small round malignant cells were present on the endometrial smear specimens. The immunocytochemical and immunohistochemical examinations revealed diffusely cytoplasmic positive reaction of neuron specific enolase (NSE) and partially membranous positive reaction of CD56 in the small cancer cells. They showed PAX-8-positive reaction, but did not express microsatellite instability high. Electron micrography showed several dense-core secretory granules in the cytoplasm of cancer cells. Despite multiple lung metastases, the patient underwent a hysterectomy and salpingo-oophorectomy in order to control excessive genital bleeding. She received six courses of adjuvant chemotherapy based on etoposide and cisplatin, and survived healthy eight months after the first visit without any viability of lung metastases.</span> </div> 展开更多
关键词 SCNEC ENDOMETRIUM NSE ULTRASTRUCTURE Etoposide and Cisplatin Regimen
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