Introduction

Case 2:

History:

Female Collie, aged 2 years with chronic weight loss
Mass in mid abdomen
Laparotomy discovered an ovarian abnormality and the ovary was removed.

Gross pathology:

Multilobulated, multicoloured ovary of massive size (20x18x12 cm)
Remainder of reproductive tract normal

Primitive dysplastic nervous tissue

Teratoma showing skin-lined cysts, cartilage, bone and nervous tissue

Ovarian Teratoma:

Teratomas arise in the gonads of either sex and may even occur congenitally.

There are both benign and malignant variants.

Teratomas are characterized by an irregular mix of tissues derived from all three cell lineages.

Cases

Review Questions

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