Focally Ossified Minimally Invasive Adenocarcinoma of the Lung Coexisting With Occult Pulmonary Metastases From Thyroid Cancer

Kadoya, Yoshisuke; Oikado, Katsunori; Ishiyama, Mitsutomi; Tanaka, Hiroko; Matsueda, Kiyoshi; Ninomiya, Hironori; Nakao, Masayuki; Okumura, Sakae; Mun, Mingyon

doi:10.1097/rti.0000000000000551

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“…However, if the metastatic PTC does not have iodine accumulation capacity, it is extremely difficult to detect. Although several case reports of occult lung metastases of PTC have been reported in resected lung specimens from patients with primary lung cancer [ 6 ], we have not found any reports of occult metastatic PTC in the lungs of patients with concomitant PAVMs.…”

Section: Discussioncontrasting

confidence: 77%

Occult lung metastases of papillary thyroid cancer detected in a resected pulmonary arteriovenous malformation specimen

Inoue

Oda

Yamada

et al. 2022

Respiratory Medicine Case Reports

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A 41-year-old man with exertional dyspnea was referred to our hospital. Chest computed tomography (CT) showed a pulmonary arteriovenous malformation (PAVM) in the left lingular lobe, and magnetic resonance imaging showed a brain abscess. After antimicrobial therapy, the patient underwent thoracoscopic lingulectomy of the PAVM. Pathological examination revealed lung metastases of papillary thyroid cancer (PTC) that were undetectable by CT. The patient underwent total thyroidectomy and D2b lymphadenectomy for the PTC (the pathological stage was T1bN2M1, Stage II). After surgery, the patient received 100 mCi of 131Iodine; post-treatment scans revealed only neck (remnant) uptake and the patient continued with thyroid hormone replacement therapy. To the best of our knowledge, this is the first report of a case of combined PAVM and occult lung metastases of PTC. Clinicians should remember that they may detect micro lung metastases of any cancer when investigating resected lung specimens.

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Section: Discussioncontrasting

confidence: 77%