A 60-year-old male smoker undergoes bronchoscopy. The image shows an abnormal endobronchial lesion. Which of the following is the most likely diagnosis?
Show Hint
Central lung cancers (Squamous and Small cell) are typically visible on standard bronchoscopy because they arise from the major bronchi.
Peripheral lung cancers (Adenocarcinoma) are often NOT visible endobronchially and usually require a percutaneous CT-guided needle biopsy.
Concept:
The clinical scenario involves an older male patient with a significant risk factor (smoking history) who is undergoing a diagnostic bronchoscopy.
The endoscopic image reveals a discrete, fleshy pathological lesion protruding into the main bronchial lumen.
The clinician must select the most probable diagnosis based on patient demographics and these typical bronchoscopic findings. Explanation: • A 60-year-old male with a significant history of smoking falls directly into the highest-risk demographic for bronchogenic carcinoma (lung cancer).
• On bronchoscopy, centrally located lung cancers (most commonly Squamous Cell Carcinoma and Small Cell Lung Carcinoma) frequently present as exophytic, friable, vascular, and irregular endobronchial masses that protrude directly into the airway lumen.
• These tumors can cause partial or complete obstruction of the bronchus, leading to presenting symptoms such as hemoptysis, chronic cough, wheezing, or post-obstructive pneumonia.
• While a foreign body could technically present as an endobronchial object, it is far more common in toddlers or patients with severe neurological impairment, and the object typically appears inert rather than like fleshy, vascular tissue.
• Benign bronchial polyps are relatively rare; any fleshy mass found in an elderly smoker must be presumed to be a malignant tumor until proven otherwise by tissue biopsy.
• Bronchial tuberculosis typically presents with edematous, hyperemic mucosa, strictures, or caseous necrotic material, rather than a discrete exophytic solid tumor mass.
• Given the classic clinical triad of older age, smoking status, and a visible exophytic endobronchial mass, a bronchial tumor is overwhelmingly the most likely diagnosis. Final Answer:
An exophytic, fleshy endobronchial mass seen in an elderly smoker is highly diagnostic of a central bronchial tumor.
