The accompanying photomicrograph compares normal bronchial mucosa (left)with abnormal mucosa (right).The magnification is approximately the same.Which one of the following is the best diagnosis for the tissue depicted on the right?

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Quizplus · Accepted Answer

The mucosa on the right is thickened by inflammation (In),hypertrophy of smooth muscle (M),and hyperplasia of mucinous glands (G).This condition is known as chronic bronchitis,and can be part of the clinical picture of chronic obstructive pulmonary disease (COPD).It is often caused by smoking,which can also lead to squamous metaplasia,and lack of cilial transport of excess mucus out of the respiratory treEIt often co-exists with emphysemA

The Accompanying Photomicrograph Compares Normal Bronchial Mucosa (Left)with Abnormal Mucosa