Mark Mavroudis, Stamp Collector. 22.1k Views. A letter can be sent to Canada from the U.S. using International First-Class Mail for as low as $0.80 (as long as the weight of the letter is not over 1 ounce).Exact rates based on weight (and for destinations other than Canada) can be found at the USPS website: http://www.usps.com/price s/first...2.1k Views. A letter can be sent to Canada from the U.S. using International First-Class Mail for as low as $0.80 (as long as the weight of the letter is not over 1 ounce).
Definitions for urachal cyst. Urachal cyst. A urachal cyst is a sinus remaining from the allantois during embryogenesis. It is a cyst which occurs in the remnants between the umbilicus and bladder. This is a type of cyst occurring in a persistent portion of the urachus, presenting as an extraperitoneal mass in the umbilical region.
Kidney cyst. Kidney cysts are round pouches of fluid that form on or in the kidneys. Kidney cysts can be associated with serious disorders that may impair kidney function. But more commonly, kidney cysts are a type called simple kidney cysts â noncancerous cysts that rarely cause complications.