6 Patterns > Nodules > Subpatterns

Nodules Sub-Patterns

There are 8 sub-patterns in the setting of nodules.

Choose the image most similar to your case.  A differential diagnosis is given below.

SEE BELOW FOR SAMPLE SIGNOUT 

GPA.jpg

w/ Necrotizing Granulomas

  • Infection

  • Aspiration

  • GPA

  • Necrotizing Sarcoid

non nec granuloma.jpg

w/ Non-Necrotizing Granulomas

  • Sarcoidosis/Berylliosis

  • Atypical mycobacterium

  • Hypersensitivity pneumonitis

  • Drug Reaction

  • Aspiration

FB.jpg

w/ Lymphoid Cells

  • Follicular bronchiolitis

  • GPA

  • Nodular lymphoid hyperplasia

  • Lymphoma

OP.jpg

w/ Organizing Pneumonia

  • Organizing infection

  • Connective Tissue Disease

  • Drug reaction

  • Granulomatosis with Polyangiitis

  • Aspiration

  • Infection

  • Idiopathic (Cryptogenic Organizing Pneumonia)

nec nodule.jpg

w/ Necrosis

  • Infection

  • Neoplasm

  • GPA

Image_241 copy.jpg

w/ Dust

  • Pneumoconioses

atyp cells.jpg

w/ Atypical Cells 

  • Infection

  • Neoplasm

w/ Stellate Scars

  • PLCH

Sample Signout of the Nodules Pattern

If no additional specific histologic features are identified, consider the following approach to signing the case out:

Nodular aggregates of _______ (see comment).

Comment:  The biopsy shows nodular aggregates of _______ (choose one form the above). The differential diagnosis includes ________(from above). Correlation with imaging studies, serology, microbiology studies, and clinical history is suggested.