A Review of Histiocytic Diseases of Dogs and Cats

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

Histiocytic proliferative disorders are commonly observed in dogs and less often cats. Histiocytic disorders occur in most of the dendritic cell (DC) lineages. Canine cutaneous histiocytoma originates from Langerhans cells (LCs) indicated by expression of CD1a, CD11c/CD18, and E-cadherin. When histiocytomas occur as multiple lesions in skin with optional metastasis to lymph nodes and internal organs, the disease resembles cutaneous Langerhans cell histiocytosis of humans. Langerhans cell disorders do not occur in feline skin. Feline pulmonary LCH has been recognized as a cause of respiratory failure due to diffuse pulmonary infiltration by histiocytes, which express CD18 and E-cadherin and contain Birbeck's granules. In dogs and cats, histiocytic sarcomas (HS) arise from interstitial DCs that occur in most tissues of the body. Histiocytic sarcomas begin as localized lesions, which rapidly disseminate to many organs. Primary sites include spleen, lung, skin, brain (meninges), lymph node, bone marrow, and synovial tissues of limbs. An indolent form of localized HS, progressive histiocytosis, originates in the skin of cats. Hemophagocytic HS originates in splenic red pulp and bone marrow macrophages in dogs and cats. In dogs, histiocytes in hemophagocytic HS express CD11d/CD18, which is a leuko-integrin highly expressed by macrophages in splenic red pulp and bone marrow. Canine reactive histiocytic diseases, systemic histiocytosis (SH) and cutaneous histiocytosis, are complex inflammatory diseases with underlying immune dysregulation. The lesions are dominated by activated interstitial DCs and lymphocytes, which invade vessel walls and extend as vasocentric infiltrates in skin, lymph nodes, and internal organs (SH).

Original languageEnglish (US)
Pages (from-to)167-184
Number of pages18
JournalVeterinary Pathology
Volume51
Issue number1
DOIs
StatePublished - Jan 2014

Fingerprint

Cat Diseases
Dog Diseases
cat diseases
histiocytosis
dog diseases
Histiocytic Sarcoma
sarcoma
Histiocytosis
cats
Langerhans cells
skin (animal)
Skin
dogs
Bone Marrow
bone marrow
Cats
histiocytes
lymph nodes
Dogs
cadherins

Keywords

  • cutaneous histiocytosis
  • histiocytic sarcoma
  • histiocytoma
  • interstitial dendritic cell
  • Langerhans cell
  • Langerhans cell histiocytosis
  • systemic histiocytosis

ASJC Scopus subject areas

  • veterinary(all)
  • Medicine(all)

Cite this

A Review of Histiocytic Diseases of Dogs and Cats. / Moore, Peter F.

In: Veterinary Pathology, Vol. 51, No. 1, 01.2014, p. 167-184.

Research output: Contribution to journalArticle

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