ditzel

A small nodule found on the lung.

We surveyed the members of the Society of Thoracic Radiology regarding their interpretation of and management decisions for very small (3-5 mm) pulmonary nodules—“ditzels”—noted on CT. […] Those radiologists located in an area considered endemic for granulomatous disease were more likely to consider an incidental ditzel benign and to recommend follow-up, whereas those in a nonendemic area were more likely to recommend biopsy.

Many asymptomatic patients have CT scans for a variety of reasons and have these "ditzels" found. They are then referred for management.

A surname from German.