Question

pencil shaped stool observed in
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Answer 1

Answer:

However in some cases, narrow stools — especially if pencil thin — may be a sign of narrowing or obstruction of the colon due to colon cancer. Irritable bowel syndrome (IBS) is another condition that may cause changes in the size of your stools, so that they're smaller, larger or narrower than usual.

Answer 2

Answer:

Narrow stools that occur infrequently probably are harmless.