case_images: PMC6465717_01
case_images: (a) CT scan showing a high contrast mass, but no axial lymph node swelling. Abnormal findings were observed in distant organs. (b) Contrast-enhanced MRI showing a mass in the same region that had early arterial enhancement and gradual washout.
case_images: cro-0012-0205-g01.jpg
case_images: PMC6465717_01_cro-0012-0205-g01.jpg
case_images: F1
case_images: The patient was admitted to our hospital with complaints of a mass in the right breast without axial lymph node swelling on computed tomography (CT) (Fig. 1a). Contrast-enhanced mic resonance imaging (MRI) showed a mass with early arterial enhancement and gradual washout measuring 9.3 x 5.8 x 10.7 mm (Fig. 1b).
case_images: The tumor shows trabecular growth patterns with a rosette formation.
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case_images: PMC6465717_01_cro-0012-0205-g02.jpg
case_images: F2
case_images: The final pathologic diagnosis was NECB with small polygonal cells having a small amount of cytoplasm, high nuclear-cytoplasmic ratio, and finely granular chromatin (Fig. 2).
case_images: (a) CT reveals the presence of anterior mediastinal lymph node metastasis. (b) After chemotherapy, CT reveals no lymph node metastases.
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case_images: PMC6465717_01_cro-0012-0205-g03.jpg
case_images: F3
case_images: Forty months after a right breast mastectomy, CT revealed anterior mediastinal lymph node recurrence (Fig. 3a). CT was performed after the chemotherapy and anterior mediastinal lymph node recurrence was not detected (Fig. 3b).