Danger Dust

The Rising Threat of Silicosis

Silicosis is caused by the inhalation of crystalline silica dust produced in construction, coal mining, and other industries. The prognosis is poor, with gradually worsening lung function leading to respiratory failure. The disease also makes patients more vulnerable to infection in the lungs, chronic obstructive pulmonary disease, autoimmune disease, and lung cancer.

In recent years, a resurgence of silicosis has been reported in engineered countertop workers. Engineered stone countertops are made from quartz aggregate held together with a resin binder. They contain substantially more crystalline silica than natural stone versions. Workers who cut, shape, grind, and polish these countertops may be exposed to significant amounts of silica dust.

Challenges in Diagnosing Silicosis

Primary clinicians recognized silicosis at the initial encounter in only four of 21 cases (19%), while radiologists recognized it in seven of 21 cases (33%). Alternative diagnoses, such as infection, were initially suggested in most cases. Nearly half of the patients (48%) had atypical imaging features.

“Silicosis may present with atypical features that may catch radiologists off guard in practice regions where silicosis is not traditionally diagnosed, which can lead to delays in diagnosis,” Dr. Lateef said.