Thanks for the good wishes folks, knowing that the lump was benign is a huge relief both to me and to my family, although I need to keep an eye on the hole where the lump used to be.
JRMILLER wrote:Is that in inverted please skirt? Where did you get it?
I'm not quite sure I know what you mean by an inverted pleat so I'll describe it and you can tell me

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The skirt is made from a slightly stretchy material (similar to stretch denim but softer). The hem is approximately 72" around but has two large pleats, one at the front and one at the back, which increase the effective hem length to 104"; plenty to accommodate a full stride. The skirt has a typical jeans type pocket layout (all "bloke sized " pockets and usable). There is a zip fly (that open to the right).
I bought it from ebay UK where it was advertised as a skirt made for a man, unfortunately I broke the zip and it is now in having a new one fitted (I don't own a sewing machine, even if I had the skills to use one) so I can't tell you the manufacturers details.
This is one of my favourite skirts and by changing the items worn with it is suitable for a huge range of circumstances. It does seem to be very well accepted by the public at large, but since I've been asked if I'm deeply religious a few times I suspect a significant proportion of folks see it as a cassock and pay no further attention.
Have fun and, once again, thanks for the good wishes,
Ian.