Add columns with list of keywords - a cyclic reference was encountered during evaluation

I have two tables:

1) Anamnesis with a long free text column (Diagnosis)  for each patient.

2) Conditions of interest(Named ListOfDiagnosis): A table consisting of only those conditions I am interested in.

Having looked at an other solution on this forum   I tried the proposed solution on my example

Table.AddColumn(

                 #"Anamnesis","NewColumn",
                     each let CurrentText =
                            [Diagnosis] in Table.SelectRows
                                 (
                                      ListOfDiagnosis, each
                                      Text.Contains(CurrentText, [condition]
                                                            )
                                 )
          )

However when I execute this code I get:  a cyclic reference was encountered during evaluation.  I am unable to see this cyclic reference and it is driving me mad(der). 🙂

Hope for some help from the community.

Thanks

         Anamnesis