Myelofibrosis in young pygmy goats

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Marked widespread myelofibrosis occurred in 11 of 16 pygmy goats from seven litters (two sires and four dams). Sires and dams were haematologically normal. Clinical histories of affected goats included lethargy, poor weight gain, and pale mucous membranes. Anaemia and neutropenia resulted in death within 6-12 weeks of age. A diagnosis of myelofibrosis was confirmed histologically in nine goats and was based on clinical signs and history in the remaining two littermates. The marrow of long bones was most severely affected with proliferation of well-differentiated fibrocytes and abundant collagen deposition. There was bone marrow megakaryocyte hyperplasia, individual megakaryocyte necrosis, megakaryocyte emperipolesis of haematopoietic cells, and clusters of degenerative megakaryocytes were present adjacent to some fibrotic foci. Prominent areas of extramedullary haematopoiesis were present in many organs but were most consistently observed in liver, thymus gland, and lymph nodes. The aetiopathogenesis of marrow fibrosis was not determined; however, clinical, haematological, and/or bone marrow morphological features in the goats were similar to findings in anaemic dogs with congenital pyruvate kinase deficiency or in human beings with myelofibrosis due to dysmegakaryocytopoiesis.

Original languageEnglish (US)
Pages (from-to)167-172
Number of pages6
JournalComparative Haematology International
Volume4
Issue number3
DOIs
StatePublished - Sep 1994

Fingerprint

Primary Myelofibrosis
Megakaryocytes
Goats
Bone Marrow
Emperipolesis
Extramedullary Hematopoiesis
Lethargy
Neutropenia
Thymus Gland
Weight Gain
Hyperplasia
Anemia
Mucous Membrane
Fibrosis
Necrosis
Collagen
Lymph Nodes
History
Dogs
Liver

Keywords

  • Anaemia
  • Myelofibrosis
  • Pygmy goats

ASJC Scopus subject areas

  • Hematology

Cite this

Myelofibrosis in young pygmy goats. / Cain, G. R.; East, Nancy; Moore, Peter F.

In: Comparative Haematology International, Vol. 4, No. 3, 09.1994, p. 167-172.

Research output: Contribution to journalArticle

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