Faces of Reticular Changes Reticulations

  • Reticular abnormality
    • fine network or mesh of
    • overlapping linear lines within th
    • architectural distortion
      • tethering and warping of the
      • normal hexagonal appearance
      • abnormal
        • size or
        • shape with
        • evidence of volume loss.
      • Honeycomb cysts are
        • subpleural clustered cystic air spaces
        •  small in size (3–5 mm). T
          • must be contiguous, and
          • must touch the pleural surface.
          • frequently multilayered, a

Inflammation
NSIP

Patient with scleroderma and NSIP showing traction bronchiectasis in the middle lobe.
Ashley Davidoff MD TheCommonVein.net

70 year old male with polymyalgia rheumatica and early peripheral reticular changes consistent with early UIP
The CT shows mild early peripheral reticular changes, and in this instance additionally characterized by bronchiolectasis abutting the fissure and possibly early honeycomb changes in the LLL posteriorly
Ashley Davidoff MD thecommonvein.net 135079m- lungs UIP
70 year old male with polymyalgia rheumatica and early peripheral reticular changes consistent with early UIP
The CT shows mild early peripheral reticular changes in the upper lobe and lung bases 
Ashley Davidoff MD thecommonvein.net 135079m01- lungs UIP

UIP

65 year old male with pathology proven UIP Peripheral reticular changes noted in the lingula and lower lobes bilaterally. 
Ashley Davidoff MD thecommonvein.net 134887- lungs UIP
65 year old male with pathology proven UIP Peripheral reticular changes noted in the lingula and lower lobes bilaterally. 
Ashley Davidoff MD thecommonvein.net 134886- lungs UIP
CT UIP and Reticular Pattern
70 year old male with UIP showing extensive dominantly bibasilar and peripheral reticulation
Ashley Davidoff MD TheCommonVein.net uip-008
CT UIP and Reticular Pattern
70 year old male with UIP showing extensive dominantly bibasilar and peripheral reticulation
Ashley Davidoff MD TheCommonVein.net uip-007
CT UIP and Reticular Pattern
70 year old male with UIP showing extensive dominantly bibasilar and peripheral reticulation
Ashley Davidoff MD TheCommonVein.net uip-006
CT UIP and Reticular Pattern
70 year old male with UIP showing extensive dominantly bibasilar and peripheral reticulation
Ashley Davidoff MD TheCommonVein.net uip-005
CT UIP Reticular Pattern and bronchiolectasis
70 year old male with UIP showing extensive, dominantly bibasilar peripheral reticulation, and bronchiolectasis in the medial basal segment of the right lower lobe
Ashley Davidoff MD TheCommonVein.net uip-007
CT UIP and Reticular Pattern
70 year old male with UIP showing extensive dominantly bibasilar and peripheral reticulation
Ashley Davidoff MD TheCommonVein.net uip-002
Reticular fibrosis post COVID
Ashley Davidoff MD TheCommonVein.net

: A Practical Guide for Radiologists in the New Era of Cancer Care RadioGraphicsVol. 37, No. 5

59-year-old male presents with history of scleroderma, , Raynaud’s disease, and ILD
Axial CT shows peripheral reticular changes, ground glass, bronchiolectasis, volume loss with crowding of the bronchovascular bundles posteriorly and subpleural sparing posteriorly. Note air-fluid level in the distended esophagus.
Ashley Davidoff MD TheCommonVein.net
59-year-old male presents with history of scleroderma, , Raynaud’s disease, and ILD
Axial CT shows peripheral reticular changes, and bronchiolectasis in the right upper lobe
Ashley Davidoff MD TheCommonVein.net
59-year-old male presents with history of scleroderma, , Raynaud’s disease, and ILD
Axial CT shows peripheral reticular changes, in the right upper lobe. Note air-fluid level in the distended esophagus.
Ashley Davidoff MD TheCommonVein.net

Scleroderma and NSIP (Probable Cellular Form)
CT shows mild peripheral ground glass changes in the upper lobes with peripheral sparing and minimal reticular change
Ashley Davidoff MD TheCommonVein.net scleroderma-013
Scleroderma and NSIP (Probable Cellular Form)
CT shows mild peripheral ground glass changes in the upper lobes with peripheral sparing and minimal reticular change
Ashley Davidoff MD TheCommonVein.net scleroderma-014

Geometric Distortion of the Secondary Lobules

Reticulation ILD Geometric Distortion of the Secondary Lobules
72 year old female showing reticular changes at the lung bases characterised by irregular thickening of the interlobular septa geometric distortion of the secondary lobules (b,c ringed) Ashley DAvidof TheCommonVein.net
136228cL
Reticulation ILD Geometric Distortion of the Secondary Lobules
72 year old female showing reticular changes at the lung bases characterised by irregular thickening of the interlobular septa geometric distortion of the secondary lobules changes Ashley Davidoff TheCommonVein.net
136229

Changes in the Interlobular Septa
Intralobular Changes

Geometric Distortion

Changes Located in the Subpleural Location

Infection

Neoplasm

131023cL.lungs-carcinoma-bilateral-lymphangitis-carcinomatosa

Mechanical Trauma Metabolic Circulatory

Immune
Amiodarone Toxicity

CT Lung Bases Interstitial Process
68-year-old male presented with atrial fibrillation during an acute episode of diverticulitis. He was started on amiodarone with good response. He presents 9 months later with dyspnea. CT scan in the axial plane through the lung bases show reticular changes characterised by irregular thickening of the interlobular septa, mild heterogeneous ground glass changes mosaic attenuation centrilobular nodules and bronchiolectasis suggesting a combination of small airway disease and an alveolitis with early fibrotic changes . These findings are consistent with amiodarone toxicity
Ashley Davidoff MD TheCommonVein.277Lu 37873c
CT Lung Bases Interstitial Process
68-year-old male presented with atrial fibrillation during an acute episode of diverticulitis. He was started on amiodarone with good response. He presents 9 months later with dyspnea. CTscan in the axial plane through the lung bases show reticular changes characterised by irregular thickening of the interlobular septa (a), centrilobular nodules, (b)mild heterogeneous ground glass changes (c) mosaic attenuation (d, teal ring) and small airway wall thickening and bronchiolectasis (d yellow ring) suggesting a combination of small airway disease and an alveolitis with early fibrotic changes. These findings are consistent with amiodarone toxicity.
Ashley Davidoff MD TheCommonVein.277Lu 37873c02

Inherited Iatrogenic Idiopathic