Radiographs in chronic OM document deformed bone, often with thick, undulating cortices, and bony sequestra entrapped by lucencies
indicative of fibrous tissue and or pus.
Figure 1: Chest x ray showing multiple cystic lucencies
on right side representing bowel loops and absence of normal silhouette of liver.
As discussed, emphysema leads to distortion of the lung parenchyma due to alveolar destruction, specifically creating rounded lucencies
within the secondary pulmonary lobule (Figures 3-5).
Postoperative radiographs obtained must be closely inspected for new lucencies
at the cement bone interface.
in the bladder wall within the bladder or tracking
Bronchiolo-alveolar carcinoma is known to present with widely varying patterns on Computed Tomography (CT) such as (i) bubblelike lucencies
of pseudocavitation associated with nodules of varying density, (ii) unifocal or multifocal ground-glass opacities, (iii) crazy paving, (iv) nodules and airspace opacities with unaffected vessels coursing through them and (v) lobar or multilobar consolidation and cavitating nodules, (vi) solitary or multiple pulmonary nodules, with and without air bronchograms.
Standard radiographs consisting of a true AP view of the scapula in neutral, internal and external rotation, along with scapular profile and axillary view help evaluate for presence of periglenoid lucencies
, glenoid component shift, superior migration of the proximal humerus, and bone defects.
The sub-articular lucencies
most probably represent intra-osseous tophi.
Later, the nodules contain central lucencies
caused by either tiny cavities or actual bronchiolar dilatation.
In addition, lucencies
resulting from removal of tissue can confirm access to the abnormality.
JAMA 1989; 262:2577-2581 [19.] McQuinn BA, O'Leary DH: White matter lucencies
on computed tomography, subacute arteriosclerotic encephalopathy (Binswanger's disease), and blood pressure.
Other infrequent manifestations include hepatosplenomegaly, meningo-encephalitis, thrombocytopenia, rubelliform rash, bone lucencies
, cryptorchidism and diabetes mellitus.