The aim was to compare the ablative efficacy of low vs high doses of radioactive iodine-131 (131I) in patients with differentiated thyroid carcinoma (DTC) after total or near total thyroidectomy.

Materials and methods

A randomized, double-armed clinical study compared the ablation outcomes of patients with low and intermediate risk DTC after administration of low (30 mCi) vs high doses (80–120 mCi) of 131I for 20 and 25 patients, respectively. All the included patients were re-examined under thyroid-stimulating hormone stimulation 6–8 months after 131I administration. Successful ablation is defined as follows: Absence of any significant 131I uptake at the thyroid bed or abnormal uptake elsewhere in the body in the diagnostic whole-body scan, stimulated serum thyroglobulin less than 2 ng/ml with negative antithyroglobulin antibodies, and free neck ultrasonography (no thyroid residue or pathological …

ABSTRACT
Although fish are a valuable source of animal protein for human, their production is reduced
sometimes by parasitic diseases. The purpose of this study was to ascertain the frequency and
importance of possible parasites that could infect freshwater fish in Sohag governorate. A
total of 150 samples [100 Nile tilapia (Oreochromis niloticus) and 50 catfish (Clarias
gariepinus)] were chosen at random from various farms in the Sohag Governorate for this
purpose. According to the parasitological analysis of the collected fish, Clarias gariepinus had
the highest infection rate 64% (32/50) compared to Oreochromis niloticus 56% (56 / 100).
Quadriacanthus spp. (50%), Contracecum spp. (50%), Trichodina spp. (56%), Myxobolus
spp. (55%), Cryptosporidium spp. (50%), and encysted metacercaria [microscopic (55%), and
macroscopic (35%)] were the parasites found in Nile tilapia fish. In contrast, the identified
parasites in catfish included microscopic encysted metacercaria (60%) and Quadriacanthus
spp. (54%), Trichodina spp. (64%), Myxobolus spp. (44%), Henneguya spp. (40%), and
Cryptosporidium spp. (56%). It is evident from the current study that a significant frequency
of numerous zoonotic parasites were found in the fish under examination. As a result, control
measures in fish farms are required to prevent the spread of these parasites, which pose a risk
to public health.
Keywords: Fresh water fish, Nile tilapia, Cat fish, Oreochromis niloticus, Clarias gariepinus,
parasites, Sohag governorate, Egypt.