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The Thyroid Gland01:23

The Thyroid Gland

The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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Graves' Disease I: Introduction01:28

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Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm
13:43

Two-step Approach to Explore Early- and Late-stages of Organ Formation in the Avian Model: The Thymus and Parathyroid Glands Organogenesis Paradigm

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Thymoma in a Java sparrow (Padda oryzivora).

H Maeda1, K Ozaki, S Fukui

  • 1Research Institute of Drug Safety, Setsunan University, Osaka, Japan.

Avian Pathology : Journal of the W.V.P.A
|June 1, 1994
PubMed
Summary
This summary is machine-generated.

A thymoma, a type of tumor, was identified in a young Java sparrow. This avian tumor comprised epithelial cells and lymphocytes, with the epithelial cells showing specific protein markers.

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Area of Science:

  • Avian pathology
  • Comparative oncology
  • Wildlife medicine

Background:

  • Thymomas are neoplasms originating from thymic epithelial cells.
  • While common in some species, thymomas are less frequently reported in avian species.
  • Java sparrows (Padda oryzivora) are small passerine birds.

Purpose of the Study:

  • To describe a case of thymoma in a Java sparrow.
  • To characterize the histopathological and immunohistochemical features of the avian thymoma.

Main Methods:

  • Histopathological examination of a cervical subcutaneous mass.
  • Immunohistochemical staining for cytokeratin and proliferating cell nuclear antigen (PCNA).

Main Results:

  • The mass consisted of epithelial cells (polyhedral and spindle shapes, some with squamous differentiation) and small lymphocytes.
  • Epithelial cells stained positive for cytokeratin, indicating epithelial origin.
  • Epithelial cells also expressed proliferating cell nuclear antigen (PCNA), suggesting cellular proliferation.

Conclusions:

  • This case represents a thymoma in a Java sparrow, characterized by specific cellular morphology and immunophenotype.
  • The findings contribute to the understanding of thymoma in avian species.
  • Further research may elucidate the pathogenesis and clinical behavior of thymomas in birds.