Lungs

• EGFR-mutated adenocarcinoma
  10 May

  EGFR-mutated NSCLC
  See also
  EGFR-mutated tumors

• pulmonary crystal storing histiocytosis
  18 February

  Definition : Crystal storing histiocytosis. This lesion is associated with myeloma and B cell lymphomas that produce immunoglobulin.
  Images
  Pulmonary crystal storing histiocytosis https://twitter.com/LizMontgomeryMD/status/1494370114010976257
  Paywall References
  Prasad ML, Charney DA, Sarlin J, Keller SM. Pulmonary immunocytoma with massive crystal storing histiocytosis: a case report with review of literature. Am J Surg Pathol. 1998 Sep;22(9):1148-53. PMID: (...)

• invasive mucinous adenocarcinoma
  5 October 2021

  PO
  Definition: Distinct variant of lung adenocarcinoma with a goblet or columnar morphology and abundant intracytoplasmic mucin.
  Differential diagnosis
  metastatic colorectal adenocarcinoma:
  Endoscopic and radiologic examination critical
  Usually multifocal
  Tend to be more solid and dense
  Proliferation of neoplastic columnar cells with abundant intracytoplasmic mucin
  CDX2 and CK20 positive
  pulmonary colloid adenocarcinoma (Hum Pathol 2015;46:836):
  Marked mucin pool replacing (...)

• enteric adenocarcinoma
  5 October 2021

  PO

• peripheral lobular fibrosis
  13 November 2020

  Etiology
  abnormal senescence telomerase mutations / familial IPF short telomeres MUC5B
  See also
  pulmonary fibrosis
  Open references
  Pathogenesis of idiopathic pulmonary fibrosis: review of recent findings.2014. PMID: #25165568#
  Genetic studies provide clues on the pathogenesis of idiopathic pulmonary fibrosis. 2013. PMID: #23268535#
  The epithelium in idiopathic pulmonary fibrosis: breaking the barrier. 2014. PMID: #24454287#
  Reduced mucociliary clearance in old mice is (...)

• diffuse pulmonary fibrosis
  13 November 2020

  diffuse pulmonary fibrosis (as in NSIP non-specific interstitial pneumonia)
  Etiology
  diseases with diffuse alveolar inflammation autoimmune connective tissue diseases drug reactions hypersensitivity pneumonia idiopathic cases : NSIP non-specific interstitial pneumonia
  See also
  interstitial pneumonia / interstitial pneumonias

• bronchiolocentric fibrosis
  13 November 2020

  Etiology
  inhalation injury / airway inflammation smoking (RB , PLCH ) inhalation aspiration : fume , food occupational diseases : pneumoconiosis , popcorn lung systemic diseases with airway inflammation idiopathic PB fibrosis : OB , DPB , idiopathic fibrosis
  See also
  pulmonary fibrosis

• bronchial spindle cell tumors
  21 July 2020

  bronchial fusiform cell tumors
  Images
  metastatic Kaposi sarcoma https://twitter.com/smlungpathguy/status/877331636492189697
  inflammatory myofibroblastic tumour https://twitter.com/TristanRutland7/status/1285473801644290048
  See also
  bronchial tumors

• pulmonary clear cell adenocarcinoma
  15 April 2020

  Images
  clear cell variant of a lung adenocarcinoma. TTF-1 + https://twitter.com/GhitouT/status/1250130469234016256
  See also
  pulmonary adenocarcinoma
  clear cell tumors clear cell adenocarcinomas

• pulmonary viral infections
  31 March 2020

  Viral pneumonia WKP
  Examples
  influenza infection
  coronovairus infection
  CMV infection
  See also
  viral infections
  pneumonia
  pulmonary infections
  infections

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