ArticleCureus2024
Corded and Hyalinized Endometrioid Endometrial Carcinoma: A Rare Case Treated With Robot-Assisted Surgery.
Article in Cureus, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Endometrial carcinoma is the sixth most common cancer among women worldwide. Minimally invasive surgery (MIS) has become the preferred treatment, offering similar survival outcomes to laparotomy with lower complication rates. Corded and hyalinized endometrioid carcinoma (CHEC) is a rare and diagnostically challenging variant of endometrioid carcinoma, first described in 2005, characterized by a biphasic appearance of traditional low-grade endometrioid adenocarcinoma and corded and spindled cells embedded in a hyaline stroma. A 55-year-old nulligravid woman presented with abnormal genital bleeding for 10 days. Initial evaluations, including transvaginal ultrasonography and histological examination, confirmed adenocarcinoma. Imaging studies (magnetic resonance imaging [MRI] and computed tomography [CT]) revealed a thickened endometrium (11 mm) with no myometrial invasion, enlarged pelvic lymph nodes, or distant metastasis. Tumor markers were within normal ranges. She underwent robot-assisted laparoscopic total hysterectomy, bilateral adnexectomy, and pelvic lymph node biopsy using the da Vinci Xi system (Intuitive Surgical, Sunnyvale, CA). Histopathological examination revealed CHEC, with characteristic epithelioid and spindled cells arranged in cords within a hyalinized stroma. Immunohistochemical staining showed focal positivity for cytokeratin AE1/AE3, weak estrogen receptor positivity, and nuclear β-catenin expression, distinguishing it from carcinosarcoma. The diagnosis was confirmed as CHEC, FIGO 2008 stage IA (pT1aN0M0). The patient remained disease-free 18 months post-surgery. CHEC is a rare variant of endometrioid carcinoma with unique histological features. It typically presents in younger patients at an early stage and has a favorable prognosis. Accurate diagnosis is crucial to differentiate it from more aggressive tumors like carcinosarcoma, preventing overtreatment. The immunohistochemical profile, particularly nuclear β-catenin accumulation, is useful in distinguishing CHEC from carcinosarcoma. This is the first documented case of CHEC successfully treated with robot-assisted surgery. Increased awareness among pathologists and clinicians is essential for accurate diagnosis and optimal management of this rare tumor variant.
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