Revision of strictured anoplasty

Some children develop a tight stricture at the junction of the skin and the neoanus after an otherwise successful posterior sagital anorectoplasty. If the scarring is truly skin level only ( a few mm thick), then a Heineke-Mikulicz type plasty at 3, 6, 9, and 12 o’clock is very useful.           … [Read more…]

Pilonidal Rhomboid Flaps

Pilonidal disease is usually surgically managed by elliptical off-midline excision and primary closure. Other options (negative pressure wound dressings, packing with healing by secondary intention, injection of tracts with fibrin glue, etc) are also used. Recurrent (and sometimes primary) disease may require rotational flaps. Many options are available. One of the simpler options is a … [Read more…]

R Snippets

How to combine several date columns into one: weather <- data.frame(Year.UTC=c(2012, 2013), Month.UTC=c(1,2), Day.UTC=c(1,2), Hour.UTC=c(22,23)) weather <- within(weather, datetime <- as.POSIXct(paste(Year.UTC, Month.UTC, Day.UTC, Hour.UTC, sep=”-“), format=”%Y-%m-%d-%H”, tz=”UTC”)) Link Plot multiple histograms in vertical stack based on a factor library(ggplot2) library(ggplot2) ggplot(movies, aes(x = rating)) geom_histogram(binwidth = 0.5, aes(fill =factor(Comedy))) + facet_grid(Comedy~.) Link Check the column … [Read more…]