This is a prognostic study of the late lung complications arising at the patient's having received an allograft of hematopoetic stem cells.

• Objectives To estimate the incidence of late (at least occurring 100 days after transplantation) pulmonary complications following allogeneic blood stem cells transplantation
• Study Design Prospective Cohort Study All follow-up data were actualiized in September, 2016.
• Sample Size 200 transplanted patients
• Main Endpoint Non infectious pulmonary complications within the first 3 years

Inclusion Criteria:

• Allogeneic Blood stem cell transplantation
• Alive at day 100 post-transplant

Exclusion Criteria:

• Non informed consent

Patients who underwent a allogeneic blood stem cell transplantation, alive at 100 days post-transplantation