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Features for Predicting Absorbable Pulmonary Solid Nodules as Depicted on Thin-Section Computed Tomography.

Rui-Yu Lin1, Fa-Jin Lv1, Bin-Jie Fu1

  • 1Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China.

Journal of Inflammation Research
|July 9, 2021
PubMed
Summary
This summary is machine-generated.

Younger patients with specific CT findings like homogeneous density and ill-defined borders may have benign pulmonary solid nodules (PSNs). These features help differentiate absorbable PSNs from malignant ones.

Keywords:
absorbable nodulefollow-upsolid noduletomographyx-ray computed

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Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Oncology

Background:

  • Pulmonary solid nodules (PSNs) are common findings on chest imaging.
  • Distinguishing benign, absorbable PSNs from malignant ones is crucial for patient management.
  • Computed tomography (CT) plays a key role in characterizing PSNs.

Purpose of the Study:

  • To identify clinical and CT characteristics of absorbable PSNs.
  • To develop CT-based criteria for differentiating absorbable PSNs from malignant nodules.

Main Methods:

  • Retrospective analysis of 348 PSNs (171 absorbable, 177 malignant) in 316 patients from January 2015 to February 2021.
  • Comparison of clinical and CT data between absorbable and malignant PSNs.
  • Multivariate analysis to identify independent predictors of PSN type.

Main Results:

  • Significant differences observed in age, location, shape, homogeneity, borders, and specific CT signs (vacuoles, air bronchograms, lobulation, spiculation, halo sign, etc.) between the two groups.
  • Independent predictors for absorbable PSNs included younger age (≤55 years), homogeneous density, ill-defined border, halo sign, multiple nodules, and pleural abutment.
  • Malignant PSNs were associated with lobulation, spiculation, and pleural indentation.

Conclusions:

  • PSNs in patients younger than 55 years with homogeneous density, ill-defined borders, a halo sign, multiple nodules, and abutting the pleura are highly suggestive of being absorbable.
  • These CT features can aid in the non-invasive differentiation of benign from malignant PSNs.