The thyroid is a vascular endocrine gland with two lateral lobes connected by a narrow, median isthmus. Although a wide range of congenital anomalies of the thyroid gland has been reported in the literature, agenesis of the thyroid isthmus is a very rare congenital anomaly. Thyroid isthmus agenesis does not manifest clinical symptoms, and it can be confused with other thyroid pathologies. We de...

Thyroid ultrasound is easy to perform due to the superficial location of the thyroid gland, but appropriate equipment is mandatory with a linear high frequency transducer (7.5 - 12) MHz. Some pathological aspects of the thyroid gland are easily diagnosed by ultrasound, like the enlargement of the thyroid volume (goiter) or the presence of nodules and cysts; while other aspects are more difficul...

background: due to volatility of radioactive iodine solutions, usually internal exposure would occur in personnel that are working in nuclear medicine centers. the activities in the thyroid of individual s who work in nuclear medicine centers of north west provinces of iran were measured using nai (sodium iodide) detectors. in every center, nearly 40 - 500 mci of 131 i and 50 - 600 μ ci of 125 ...

Fine needle aspiration biopsy is the most feasible, safe, and accurate diagnostic tool for thyroid nodule diagnosis. The development of a sinus tract between thyroid gland and the skin through needle tract after fine needle aspiration biopsy is an extremely uncommon phenomenon. In this paper, a 71-year-old man presenting with a swelling and discharge on the anterior neck wall was reported. Simi...

Seasonal changes of the thyroid gland structure and hormones secretion was examined in yellowfin seabream Acanthopagrus latus in Persian Gulf (Zangi branch, Musa creek). Thyroid gland composed of follicles scattered around the ventral aorta, near the gills. Follicular cells varied according to secretion of the gland during warm and cold seasons. Thyroid hormones (Triidothyronine [T3] and Thyrox...

Granular cell tumor presenting as a thyroid mass is very rare. It may arise from the thyroid gland or from the tissues/organs adjacent to the thyroid gland. It may cytologically mimick other common thyroid tumors. The accurate evaluation of these tumors may be important for management. We describe a granular cell tumor arising from the tissue adjacent to the thyroid gland and with multiple orga...

Cruciferous plants viz. cabbage, cauliflower, turnip, radish, mustard etc. that contain goitrogenic/antithyroid substances, constitute a portion of regular human diet. The effect of chronic feeding of fresh and cooked radish, R. sativus under varying state of iodine intake on morphological and functional status of thyroid in albino rats was evaluated by thyroid gland morphology and histology, t...

Introduction: Although co-occurring thyroid pathologies are common in patients with primary hyperparathyroidism, synchronous parathyroid and differentiated thyroid carcinoma is a rare situation. Case: A 65-year-old woman presented to our endocrinology clinic for evaluation of hypercalcemia. She had an albumin-corrected serum calcium (Ca) concentration of 12.4 mg/dl (normal, 8.6-10 mg/dl), serum...

an experiment was conducted to investigate the effect of thyroid gland activity modulation (hyper or hypothyroidism) on energy utilization in broiler chickens. two hundred and forty one-day-old cobb broiler chicks were distributed into three dietary metabolizable energy (me) treatment groups (80 chicks each). the control group (e0) was fed basal diet (3150 kcal/kg diet), the second group (e1) w...

Thyrotoxicosis is a term used to describe any condition in which there is an excessive amount of circulating thyroid hormone whether from excess production and secretion from an overactive thyroid gland, leakage from a damaged thyroid gland, or from an exogenous source. In most veterinary patients, thyrotoxicosis occurs from thyroid gland hyperfunction. Feline hyperthyroidism is a common endocr...