Epidemiological study of goiter in man and animals of Iraq

Abstract EN

Goiter occurred in Iraq .

Human cases were recorded in Diwania while animal cases recorded in Mosul area.

These cases were diagnosed pathologically and classified depend on gross and microscopical pathological changes . Nodullar colloid goiter , papillary thyroid cancer and medullary thyroid carcinoma were present in patients of Diwania while hyperplastic goiter was very common in animals of Mosul . Nodullar goiter, grossly thyroid gland appeared nodullated firm or hard in pulpation.

Microscopically, the nodulles have various sizes of Follicles , some of them were distended with colloid and others were small in size .

The nodules were seperated by fibrous connective tissue . Papillary thyroid cancer characterized by enlargment of thyroid gland while microscopically there are many papillary projections tree like pattern (Papilliform projections to the lumen of follicles ). The medullary cancer of thyroid, grossly tumor distrected to one lobe and there are several foci of haemorrhage and necrosis .

Sometimes amyloidic stroma was present . The hyperplastic goiter is highly endemic in animals and human of northern of Iraq .

Grossly enlargment of thyroid gland ( both lobes ) hyperemic, while microscopically hyperplastic proliferation of epithelial cells to the lumen ofollicles .

The colloid was scanty and vacuolated