regex101: PCRE2 (PHP) Match Workspace

Non-Capturing Group(?:\w+\W+){0,18}

{0,18}repeats the group contents below between 0 and 18 times:

\w+any word character, repeated at least once

\W+any non-word character, repeated at least once

Group 1(\d{1,2}(\.|\/|-)\d{1,2}(\.|\/|-)\d{2,4})

\d{1,2}a digit, repeated between 1 and 2 times

Group 2(\.|\/|-)

1st Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{1,2}a digit, repeated between 1 and 2 times

Group 3(\.|\/|-)

1st Alternative\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d{2,4}a digit, repeated between 2 and 4 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Search reference

Regular Expression

(?:\w+\W+){0,18}(\d{1,2}(\.|\/|-)\d{1,2}(\.|\/|-)\d{2,4})

New


"

BIRADS: 0, Incomplete - need prior mammograms for comparison

A breast health history was obtained and a risk assessment
analysis of the patient's lifetime risk of breast malignancy was
completed.  These models indicate a lifetime risk of breast
malignancy as follows:

Tyrer-Cuzick 10-year:          8.6 %..........[average woman <5%]
Tyrer-Cuzick Lifetime:         21.4 %..........[average woman
<12%]
Myriad Table:                       2.6 %..........[average woman
<5%]
GAIL 5-year:                         2.9 %..........[average
woman <1.67%]
NCI Lifetime:                        15.1 %..........[average
woman <10%]
 
Addendum: 

Date Addendum Dictated: 7/19/2019

BIRADS: 2, benign findings

Recommend: 
1: Routine screening mammogram in 1 year

Regular Expressions 101

Regular Expression

Substitution