Medicine · 2025
Collision tumor of thyroid: A case report of synchronous papillary and follicular thyroid carcinoma.
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Kim Dabin, Chin Susie, Lim Cheol-Wan, Kim Zisun, Hur Sung-Mo
Аннотация
RATIONALE: Collision tumors involving differentiated thyroid carcinomas are exceedingly rare, despite the overall high prevalence of thyroid cancer.
PATIENT CONCERNS: A 65-year-old man was incidentally diagnosed with thyroid cancer during a staging workup for gastric cancer.
DIAGNOSES: The histopathologic examination revealed 2 coincident cancers of the left thyroid lobe: papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0).
INTERVENTIONS: The patient underwent total thyroidectomy with central lymph node dissection, followed by thyroid hormone suppression and radioactive iodine therapy.
OUTCOMES: No postoperative complications or cancer recurrence has been observed to date.
LESSONS: This case highlights the diagnostic challenges and surgical considerations associated with collision tumors of the thyroid. Appropriate management remains controversial; therefore, further case studies and consensus guidelines are necessary.
PATIENT CONCERNS: A 65-year-old man was incidentally diagnosed with thyroid cancer during a staging workup for gastric cancer.
DIAGNOSES: The histopathologic examination revealed 2 coincident cancers of the left thyroid lobe: papillary carcinoma (pT1bN1a) and follicular carcinoma (pT2N0).
INTERVENTIONS: The patient underwent total thyroidectomy with central lymph node dissection, followed by thyroid hormone suppression and radioactive iodine therapy.
OUTCOMES: No postoperative complications or cancer recurrence has been observed to date.
LESSONS: This case highlights the diagnostic challenges and surgical considerations associated with collision tumors of the thyroid. Appropriate management remains controversial; therefore, further case studies and consensus guidelines are necessary.