Unknown etiology

Articles

• neonatal giant cell hepatitis
  15 November 2010

  Synopsis
  extramedullary hematopoiesis (74%), including both myelopoiesis and erythropoiesis
  portal and lobular inflammation mild-to-absent in 95% of cases
  lobular cholestasis (from mild to moderate) with predominantely canalicular pattern (84%).
  bile ducts hypoplastic (32%) but not absent or reduced in numbers.
  mild focal ductular proliferation (18%)
  portal fibrosis or pericellular fibrosis (30%; advanced in 8%).
  Idiopathic (49%),
  Secondary
  hypopituitarism (16%)
  biliary (...)

• balanitis xerotica obliterans
  26 October 2007

  Balanitis xerotica obliterans (BXO)

• autism
  1 October 2003

  Definition: Autism is a neurodevelopmental syndrome defined by deficits in social reciprocity and communication and by unusual repetitive behaviors. Although there is an underlying genetic predisposition, the etiology of autism is currently unknown. A recent increase in prevalence suggests that genetically determined vulnerability to environmental exposure might contribute to the causation of autism.
  Autism is a common and genetically heterogeneous disorder, with an estimated heritability (...)

• rheumatoid arthritis
  6 October 2003

  rheumatoid polyarthritis

• Behcet disease
  31 October 2005

  Behcet syndrome

• sarcoidosis
  22 September 2003

  Sarcoidosis is a granulomatous disorder of unknown etiology, associated with an accumulation of CD4+ T cells and a TH1 immune response. WP
  Images
  hepatic sarcoidosis https://twitter.com/Hopkins_GI_Path/status/675402892036173826
  cutaneous sarcoidosis https://twitter.com/RyanHickMD/status/731249607909351424
  Sarcoidosis: all types of giant cells and endogenous inclusions occur, none are specific https://twitter.com/smlungpathguy/status/879435684540538884
  Links
  Sarcoidosis in (...)

• myopathic CIPO
  26 November 2009

  myopathic chronic intestinal pseudoobstruction

• infantile myofibromatosis
  9 February 2006

  Definition: Infantile myofibromatosisis is defined by the presence of multiple infantile myofibromas. Infantile myofibromatosis is a term coined by Chung and Enzinger.
  It exclusively affects infants and young children, with 60% of cases noted at birth or shortly thereafter and more than 80% occurring before the age of 2 years.
  Infantile myofibromatosis is one of the most commonly occurring tumors of the neonatal period, presenting in both solitary and multicentric forms.
  Most solitary (...)

• unclassified amylopectinosis
  6 April 2011

  unclassified amylopectinosis

• eosinophilic granulomatosis with polyangiitis
  8 June 2005

  allergic granulomatous vasculitis, Churg-Strauss syndrome; Churg-Strauss disease; EGPA
  Cases
  Digital Case 198 (HPC:198)
  Clinical synopsis
  fever
  cough
  expectorations
  asthenia
  bilateral pulmonary infiltrates.
  Synopsis
  eosinophilic vasculitis
  eosinophilic perimyocarditis
  eosinophilic pericardial effusion
  eosinophilic pleural effusion
  peripheral blood eosinophilia
  pulmonary anomalies pulmonary eosinophilic vasculitis eosinophilic pneumonia (pulmonary eosinophilic (...)

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