ArticleGynecologic oncology2024
Lymph node metastases in endometrial carcinoma: A modern assessment in the era of sentinel lymph node mapping and molecular subtyping.
Article in Gynecologic oncology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
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12 authors.
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Abstract
objectiveTo examine the risk of sentinel lymph node (SLN) metastases in apparent uterine-confined endometrial cancer (EC) using molecular classification with clinicopathologic features and assess oncologic outcomes by molecular subtypes with micro- or macro-metastases in SLN.
methodsPatients undergoing surgical staging for presumed uterine-confined EC of any histology, with successful bilateral SLN mapping were included. Primary tumors were assigned molecular subtypes using a published algorithm. SLN pathology was categorized as negative, isolated tumor cells (ITCs), or micro- or macro-metastases.
resultsOverall, 756 patients were included; 80 (10 %) had micro- or macro-metastases and 51 (7 %) had ITCs. On multivariate multinomial logistic regression, risk of micro- or macro-metastases versus negative SLN was higher for ECs with copy number-high (CN-H)/TP53abn (OR 3.1; 95 % CI 1.3-7), lymphovascular space invasion ([LVSI]; OR 8.0; 95 % CI 4-16), and deep myoinvasion (≥50 %; OR 3.33; 95 % CI 1.9-6.04). Three-year PFS rates by subtype for 68 patients with macro-metastases were 38 % (95 % CI 10-67 %) CN-low/no specific molecular subtype (CN-L/NSMP), 66 % (95 % CI 44-82 %) microsatellite instability-high (MSI-H), and 23 % (95 % CI 10-40 %) CN-H/TP53abn (p = 0.006). Three-year OS rates were 55 % (95 % CI 20-80 %) CN-L/NSMP, 83 % (95 % CI 61-93 %) MSI-H, and 55 % (95 % CI 34-71 %) CN-H/TP53abn (p = 0.048).
conclusionsIntegrating molecular subtype with uterine risk factors (LVSI and myoinvasion) further stratifies risk of occult SLN metastases in patients undergoing surgical staging for early-stage EC. No molecular subgroup had exceedingly low SLN metastases detected, supporting continued universal SLN assessment. Patients with macro-metastases and CN-L/NSMP or CN-H/TP53abn EC had worse outcomes than those with MSI-H EC.
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