Pft shows high dlco and frc, normal volumes, mild obstructive ventilatory defect, increased capillary blood volumes, in context of ctd and cryofibrinogenemia (no asthma or smoking), what can be cause?

Lung bleeding: Dlco with normal other values could be falsely high, see your doctor. Shahzeidi, md.

Unrelated: Ctd is usually associated with a diffusion problem in the lung but your showed above normal dlco. The study also showed mild airway obstruction which, along with the elevated dlco and FRC may well be from asthma. I am not away of any cryofibrinogenemia link to your lung function findings. See an allergist or pulmonologist.