Cancer Research and Treatment

Original Article

Factors Associated with Postoperative Recurrence in Stage I to IIIA Non–Small Cell Lung Cancer with Epidermal Growth Factor Receptor Mutation: Analysis of Korean National Population Data: Kyu Yean Kim, Ho Cheol Kim, Tae Jung Kim, Hong Kwan Kim, Mi Hyung Moon, Kyongmin Sarah Beck, Yang Gun Suh, Chang Hoon Song, Jin Seok Ahn, Jeong Eun Lee, Jae Hyun Jeon, Chi Young Jung, Jeong Su Cho, Yoo Duk Choi, Seung Sik Hwang, Chang Min Choi, Seung Hun Jang, Jeong Uk Lim, Korean Association for Lung Cancer, Korea Central Cancer Registry; Received January 19, 2024 Accepted July 8, 2024 Published online July 10, 2024; DOI: https://doi.org/10.4143/crt.2024.073 [Epub ahead of print]

Abstract PDF Supplementary Material PubReader ePub: Purpose
Recent development in perioperative treatment of resectable non–small cell lung cancer (NSCLC) have changed the landscape of early lung cancer management. The ADAURA trial has demonstrated the efficacy of adjuvant osimertinib treatment in resectable NSCLC patients; however, studies are required to show which subgroup of patients are at a high risk of relapse and require adjuvant epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor treatment. This study evaluated risk factors for postoperative relapse among patients who underwent complete resection.
Materials and Methods
Data were obtained from the Korean Association for Lung Cancer Registry (KALC-R), a database created using a retrospective sampling survey by the Korean Central Cancer Registry (KCCR) and the Lung Cancer Registration Committee.
Results
A total of 3,176 patients who underwent curative resection was evaluated. The mean observation time was approximately 35.4 months. Among stage I to IIIA NSCLC patients, the EGFR-mutant subgroup included 867 patients, and 75.2%, 11.2%, and 11.8% were classified as stage I, stage II, and stage III, respectively. Within the EGFR-mutant subgroup, 44 (5.1%) and 121 (14.0%) patients showed early and late recurrence, respectively. Multivariate analysis on association with postoperative relapse among the EGFR-mutant subgroup showed that age, pathologic N and TNM stages, pleural invasion status, and surgery type were independent significant factors.
Conclusion
Among the population that underwent complete resection for early NSCLC with EGFR mutation, patients with advanced stage, pleural invasion, or limited resection are more likely to show postoperative relapse.

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Case Report

Severe Hypothyroidism Induced by Thyroid Metastasis of Cholangiocarcinoma: Woo Kyun Bae, Hyun Jeong Shim, Yoo Duk Choi, Jin Woong Kim, Sang Hee Cho, Ho Cheol Kang, Ik Joo Chung; Cancer Res Treat. 2009;41(1):56-58. Published online March 31, 2009; DOI: https://doi.org/10.4143/crt.2009.41.1.56

Abstract PDF PubReader ePub

We report a case of severe hypothyroidism in a cholangiocarcinoma patient with metastasis to the thyroid gland. A 58-year-old man was admitted for upper abdominal discomfort and multiple palpable neck nodules. Abdominal computed tomography (CT) demonstrated the presence of a 4.7-cm tumor in the right hepatic lobe, and core needle biopsy revealed it to be cholangiocarcinoma. Neck CT showed a diffuse, low attenuation thyroid gland, and fine-needle aspiration (FNA) demonstrated metastatic adenocarcinoma. Thyroid function tests were initially normal, but the size of the thyroid gland decreased and severe hypothyroidism developed after chemotherapy was implemented for cholangiocarcinoma. In a patient with malignant disease and a goiter, the possibility of a metastatic tumor involving the thyroid should be seriously considered. Metastatic thyroid cancer and thyroid dysfunction are probably infrequent, but diagnosis is important in the institution of appropriate therapy.

Citations

Citations to this article as recorded by

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