EVIS X1 Respiratory Imaging Atlas- RDI

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EVIS X1 Respiratory Atlas
EVIS X1 Respiratory Imaging Atlas- RDI

Table of Contents

Case : Right lung tumor

Fumihiro Asano, MD, PhD

Department of Pulmonary Medicine,

Gifu Prefectural General Medical Center

Procedure information

Scope: BF-1TH1200
Case:Right lung tumor
Location:From the lower trachea to the right main bronchus
Patient information: Male, 70 years old
Medical history:Having experienced a persistent cough for about 1 month, the patient went to a local clinic. A chest X-ray revealed an abnormal shadow in the right middle lung field, and he was referred to our institution.

1-1 Tracheal bifurcation (WLI)

When viewed from the lower trachea using WLI, the anterior wall of the trachea and both the left and right bronchial walls appear prominently red. The tracheal bifurcation is enlarged, and the membranous portion of the trachea appears bulging with the presence of a bridging fold. Although the subepithelial blood vessels appear to be proliferated, visibility is maintained.

1-2 Tracheal bifurcation (TXI)

TXI mode enhances the color tone and surface texture of the redness more than white light mode. The left main bronchus is depicted clearly without causing halation even in closer areas, allowing for enhanced observation of the longitudinal folds in deeper areas.

1-3 Right main bronchus (WLI)

The right main bronchus appears sharply narrowed, and significant redness is observed. The longitudinally arranged folds and cartilage rings cannot be clearly seen, indicating that the tumor has spread widely from the subepithelial layer to within the bronchial wall.

1-4 Right main bronchus (TXI)

The TXI mode enhances the color tone and proliferated subepithelial blood vessels. In the upper right of the image, the upper lobe bronchus can be recognized on the distal side, while the intermediate bronchus is visible in the lower left of the image.

1-5 Right main bronchus (RDI)

The RDI mode demonstrates changes only in the color tone of the flare part and subepithelial vasculature, indicating no active bleeding in the cavity.

Pathological Findings

Endoscopic biopsy and EBUS-TBNA of mediastinal lymph node revealed:

Small cell carcinoma (poorly differentiated neuroendocrine carcinoma)
Diffuse proliferation of atypical cells with high N/C ratio and small, round, naked nuclei; synaptophysin （＋）, chromogranin A （＋）, CD56 （＋）, TTF-1 （＋）, and LCA （－）

Overall Comment

This was a case of small cell carcinoma originating from the right upper lobe (c-T4N3M1, stage IV), with bronchoscopy findings showing widespread progression of the small cell carcinoma from the subepithelial layer to inside and outside the bronchial wall. TXI mode enhances the visualization of SCLC that has spread widely beyond the bronchial wall, compared to white light. Additionally, it allows for clear observation of distal areas without causing halation in proximal areas, enabling easier determination of the extent of invasion.

Case 11 : Tumor in the right upper lobe RDI Technology

Content Type

Imaging Atlas