Unknown etiology

Articles

• rheumatoid arthritis
  6 October 2003

  rheumatoid polyarthritis

• 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 (...)

• myopathic CIPO
  26 November 2009

  myopathic chronic intestinal pseudoobstruction

• 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 (...)

• pyoderma gangrenosum
  11 February 2004

  Definition: Pyoderma gangrenosum (PG) is an uncommon, chronic ulcerative condition of the skin that was first described in 1930. It can occur in any age group, but only 4% of the patients are infants or children. An underlying systemic disease is present in approximately 50% of the patients with PG.
  The most common associations include inflammatory bowel disease, arthritis, lymphoproliferative disorders and chronic recurrent multifocal osteomyelitis (CRMO).
  Pyoderma gangrenosum (PG) is a (...)

• unclassified amylopectinosis
  6 April 2011

  unclassified amylopectinosis

• syndromic diarrhea
  10 March 2010

  phenotypic diarrhea; Syndromic diarrhea - Phenotypic diarrhea - Tricho-hepato-enteric syndrome - Intractable diarrhea of infancy with facial dysmorphism - Trichorrhexis nodosa and cirrhosis - Neonatal hemochromatosis phenotype with intractable diarrhea and hair abnormalities - Intractable infant diarrhea associated with phenotypic abnormalities and immune deficiency.

• 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 (...)

• 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 (...)

• Cumming syndrome
  8 March 2005

  Cumming type campomelia; cervical lymphocele with bowed long bones; campomelia, cervical lymphocele, polycystic dysplasia, short gut, polysplenia. association

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