Conclusions in the form of five questions and our own answers to them

 
Is "hypopigmented mycosis fungoides" an authentic manifestation of mycosis fungoides? Yes.
 
Can mycosis fungoides present itself solely as hypopigmented macules and patches? Yes.
 
Are there pitfalls, clinically and histopathologically, in diagnosis of mycosis fungoides with hypopigmentation? Yes. Misinterpreting pityriasis alba and vitiligo as mycosis fungoides.
 
Do pigmentary changes in mycosis fungoides have implications for prognosis? No.
 
What is the explanation for hypopigmentation in mycosis fungoides? Not yet known.