Dendriform Pulmonary Ossification: Findings from Eight Years of Observation

Abstract

Dendriform pulmonary ossification is a rare condition characterized by branching bony spicules. A 33year-old man was clinically considered to have sarcoidosis. At 53 years old, another attending physician performed a detailed evaluation. Computed tomography showed a fine nodular pattern with foci of calcifications and pulmonary function testing showed peripheral airway obstruction. We performed a surgical biopsy. A histological examination revealed dendriform pulmonary ossification. After surgery, computed tomography showed progression of some lesions; the pulmonary function had also decreased slightly. Since dendriform pulmonary ossification might be a progressive disease, we should perform long-term follow-up.

Idiopathic diffuse pulmonary ossification: a case with 13-year follow-up

“…An accurate prognosis of DPO is difficult to determine, because of very limited number of cases with long-term follow-up data, but most of the previously published cases were asymptomatic and remained stable for many years [4]. In 2022, Nishioka et al [5] conducted a nationwide survey of patients with idiopathic DPO from 2017 to 2019 in Japan.…”

A rare case of disseminated pulmonary ossification associated with fibrotic lung disease

“…Dendriform type is less common, characterized by ossification along alveolar interstitium and septa, which on imaging appears as branching calcification along alveolar septa and pre-existing areas of fibrosis. [4] This form is associated with fibrosing ILD and chronic inflammation.…”