case of primary adductor muscle hydatidosis: "water-lily sign" on magnetic resonance imaging

Primary hydatidosis of muscle is very rare and can cause a variety of diagnostic problems. Its diagnosis is based on clinical, laboratory and radiological findings. As this infestation resembles a soft tissue tumor on clinical examination, the preoperative radiological diagnosis is very important to avoid unnecessary biopsy. The objective of this article is to present the pathognomonic "Water-lily sign" that has not been previously reported in this muscle group. To the best of our knowledge, our case is the second reported case of this pathognomonic sign in magnetic resonance imaging of primary intramuscular hydatidosis

Assessment of Normal Doppler Parameters of Portal Vein and Hepatic Artery in 37 Healthy Iranian Vilunteers

Doppler sonography is a valuable noninvasive method for the diagnosis of various liver diseases. However, there is scarce information on normal parameters of hepatic artery [HA] and portal vein [PV] in Iran. This study was conducted to assess normal Doppler indices of HA and PV in normal Iranian population. In this cross-sectional study, 37 [18 female, 19 male] healthy volunteers aged 20-40 years underwent Doppler sonography after 8 hours of fasting. PV was assessed at crossing point with inferior vena cava in normal respiration and HA in the hepatic hilum. The mean +/- SD PV diameter was 9.36 +/- 1.65 mm. The mean'SD maximum, and mean velocity of PV were 35.28 +/- 16.54 and 27.317 +/- 13.139, respectively. The mean +/- SD peak systolic velocity and resistance index of HA were 67.64 +/- 33.48 and 0.76 +/- 0.07, respectively. Normal Doppler parameters of HA and PV depend on different factors like gender, respiratory phase and technique of measurement and there is no uniform standard technique for these measurements. These factors must be considered when using Doppler parameters for diagnosis of liver disease