title: Diagnosing granulomatous inflammation of the skin. A cytomorphologic approach based on evaluation of cellular reaction patterns.
abstract: OBJECTIVE
  To determine the applicability of recognizing cellular reaction patterns in the cytologic diagnosis of granulomatous inflammation of the skin.
  
  
  METHODS
  Prospective. Two hundred seventeen cases of clinically suspected granulomatous dermatitis formed the data for this study. May-Grünwald-Giemsa, Ziehl-Neelsen, periodic acid-Schiff, silver impregnation and Gram staining methods were employed.
  
  
  RESULTS
  Five cytomorphologic patterns of granulomatous inflammation were identified: epithelioid cell granulomas (77), histiocytic granulomas (20), epithelioid cell granulomas with polymorphous exudate (77), foreign body granulomas (3) and fat necrosis with granulomas (9).
  
  
  CONCLUSIONS
  Correlating clinical presentation with cytomorphologic patterns often yields diagnostic information in the workup of granulomatous inflammation of the skin and frequently obviates the need for biopsy.
authors.affiliation: Department of Pathology, University College of Medical Sciences & GTB Hospital, Delhi, India.
authors.forename: A
authors.initials: A
authors.lastname: Bhatia
authors.forename: N
authors.initials: N
authors.lastname: Singh
authors.forename: V K
authors.initials: VK
authors.lastname: Arora
authors.forename: S N
authors.initials: SN
authors.lastname: Bhattacharya
mesh_terms: D001707:Biopsy, Needle / Q000295:instrumentation / Q000379:methods*; D003937:Diagnosis, Differential; D005218:Fat Necrosis / Q000150:complications / Q000473:pathology; D006099:Granuloma / Q000150:complications / Q000473:pathology*; D015745:Granuloma, Foreign-Body / Q000473:pathology; D006801:Humans; D011446:Prospective Studies; D015203:Reproducibility of Results; D012867:Skin / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology*