# Chronic Aspiration as a Cause for Dendriform Pulmonary Ossifications

## TL;DR

Dendriform pulmonary ossifications can be caused by chronic aspiration, not just interstitial lung disease.

## Contribution

Identifies chronic aspiration as a novel cause of dendriform pulmonary ossifications.

## Key findings

- DPO can appear in patients with chronic aspiration when no ILD is present on CT.
- DPO is characterized by dendrite-like lines in the lung bases.

## Abstract

Teaching point: Dendriform pulmonary ossifications (DPO) are a rare form of diffuse pulmonary ossifications, in which these ossifications are organised in dendrite-like lines in the periphery of the bases of the lung, most commonly attributed to underlying interstitial lung disease (ILD), but can also be found in patients with chronic aspiration if no other CT findings of ILD are present.