Yoshiki Mikami

Ovarian seromucinous carcinoma is generally classified within the spectrum of endometrioid carcinoma. We report a rare ovarian carcinoma with mucoepidermoid carcinoma-like features arising in direct association with a seromucinous borderlin…

To explore the clinicopathological features and origin of mesonephric-like adenocarcinomas (MLAs), 83 cases diagnosed or suspected to be MLAs were collected from various institutions in Japan. We clearly classified 78 as MLAs (uterus: 47, o…

BACKGROUND: Intracranial cystic lesions are often a trigger for epileptic seizures. However, there has never been a report of a cystic lesion lined with fallopian tube-type epithelium. OBSERVATIONS: A 48-year-old female presented with a cy…

OBJECTIVE: Previously, we reported that insulinoma-associated protein 1 (INSM1) immunohistochemistry (IHC) showed high sensitivity for neuroendocrine carcinoma of the uterine cervix and was an effective method for histopathological diagnosi…

OBJECTIVE: We aimed to elucidate the pathogenesis of ovarian cancer through the loss of mismatch repair (MMR) proteins in women with Lynch syndrome (LS) in this report. CASE REPORT: Two women with LS underwent surgery for synchronous endom…

AIM: Histopathologic diagnosis of a subset of uterine smooth muscle tumors is challenging. We report a critical review regarding the clinicopathological point of view of 62 cases of subsequently recurred or metastasized leiomyoma. METHODS:…

INTRODUCTION: Most seminal vesicle malignancies are secondary to prostate or bladder cancer. Herein, we report a case of primary clear cell carcinoma of the seminal vesicle. CASE PRESENTATION: A 27-year-old man was referred to our departme…

Ovarian seromucinous tumors were introduced in the 2014 World Health Organization (WHO) classification as one of the seven types of ovarian epithelial tumors. They are characterized by frequent association with endometriosis and bilateralit…

Endometrial cancer is the most common gynecologic neoplasm in developed countries; however, updated universal guidelines are currently not available to handle specimens obtained during the surgical treatment of patients affected by this dis…

Although endometrial carcinoma (EC) is generally considered to have a good prognosis, over 20% of women with EC die of their disease, with a projected increase in both incidence and mortality over the next few decades. The aim of accurate p…

•A patient had endometrioid adenocarcinoma arising from endometriosis in the canal of Nuck.•The tumor invaded muscles in the inguinal region.•She showed favorable prognosis by radical surgery and adjuvant chemotherapy.

There has been significant progress in the understanding of the pathology and molecular biology of rare ovarian cancers, which has helped both diagnosis and treatment. This paper provides an update on recent advances in the knowledge and tr…

A decade of accumulated evidence has led to significant progress and a paradigm shift in ovarian tumor pathology. Now, ovarian carcinoma is widely recognized as a heterogeneous group of neoplasms with regard to histogenesis and underlying m…

A uterus-like mass is an extrauterine mass with a cavity lined by endometrial tissue and a smooth muscle layer resembling the uterine corpus. It is a rare condition of unknown histogenesis. Herein, we describe a case of clear cell carcinoma…

Adenomyosis is a common gynecologic disease. Pregnancy with adenomyosis is on the increase due to a tendency of delay with first pregnancies and various infertility treatments involved in the process. We encountered decidualized adenomyosis…

Primary endometrioid adenocarcinoma rarely occurs in the vagina. Occasionally, endometrioid adenocarcinoma has a microglandular pattern. Herein, a case of primary endometrioid adenocarcinoma of the vagina with a microglandular pattern arisi…

Primary mucinous adenocarcinomas of the uterine corpus are typically low grade and frequently associated with endometrial hyperplasia and/or ordinary endometrioid adenocarcinoma, but may appear as a heterogeneous group of neoplasms. A case …

Poster: ECR 2007 / C-319 / MR spectrum of benign endometriomas and malignant transformation in endometriomas: Correlation with pathologic findings by: T. Koyama , K. Tamai, Y. Mikami, N. Morisawa, K. Fujimoto, T. Saga, S. Fujii, K. Togash…

Endocervical-like mucinous borderline tumor (EMBT) is a distinct entity of the ovary that seems to be underrecognized. It occurs with relatively high frequency in Japanese women. Compared with intestinal-type mucinous borderline tumor (IMBT…