case_images: PMC5320300_01
case_images: The Computed Tomography (CT) scan showed a lobulated round nodule in the left upper lobe adjacent to the bronchus measuring 1.8 x 1.6 cm with an absence of significant lymph nodes. It is associated with a focal area of ground glass opacity and mild dilatation with mucus plugging.
case_images: CRIPU2017-1606432.001.jpg
case_images: PMC5320300_01_CRIPU2017-1606432.001.jpg
case_images: fig1
case_images: The Computed Tomography (CT) scan revealed a lobulated round nodule in the left upper lobe adjacent to the bronchus, measuring 1.8 x 1.6 cm with an absence of significant lymph nodes (Figure 1).
case_images: The flexible bronchoscopy revealed a swollen endobronchial lesion at the apical posterior segment of left upper lobe.
case_images: CRIPU2017-1606432.002.jpg
case_images: PMC5320300_01_CRIPU2017-1606432.002.jpg
case_images: fig2
case_images: Flexible bronchoscopy revealed a swollen endobronchial lesion at the apical posterior segment of left upper lobe of the lung (Figure 2).
case_images: Histopathology shows benign squamous cells consistent with the diagnosis of squamous papilloma. Negative for dysplasia, malignancy, or granuloma.
case_images: CRIPU2017-1606432.003.jpg
case_images: PMC5320300_01_CRIPU2017-1606432.003.jpg
case_images: fig3
case_images: MT-PCR were positive and later, the Mycobacterium tuberculosis culture was also positive. Multiple biopsies were taken from the endobronchial lesion and histopathology was consistent with the diagnosis of squamous papilloma (Figure 3).
case_images: Follow-up CT chest redemonstrated the same lobulated round mass in the left upper lobe which is almost stable from the previous study. The mass is surrounded by ground glass opacity which is almost stable from the previous study.
case_images: CRIPU2017-1606432.004.jpg
case_images: PMC5320300_01_CRIPU2017-1606432.004.jpg
case_images: fig4
case_images: A follow-up CT chest redemonstrated the same lobulated round nodule in the left upper lobe, almost stable from the previous study (Figure 4).
case_images: Histopathology shows a polyp lined with malignant squamous epithelium consistent with the diagnosis of well-differentiated squamous cell carcinoma.
case_images: CRIPU2017-1606432.005.jpg
case_images: PMC5320300_01_CRIPU2017-1606432.005.jpg
case_images: fig5
case_images: Multiple transbronchial biopsies were consistent with the diagnosis of well-differentiated squamous cell carcinoma (Figure 5).