"The condition tends to have a progressive course where up to 30% of patients may not survive beyond 7-12 years post-diagnosis 5. The prognosis is thought to be worse with proximal or severe mid airways disease (as opposed to more distal pulmonary amyloidosis). Bronchoscopic debridement and laser treatments have sometimes been considered as therapeutic options but at the time of writing are not thought to prevent progressive airways narrowing 5. Local excision, however, may be temporarily effective 6. Other options have included radiation therapy (with occasional successful case reports 6-7)."
"post-intubation tracheal stenosis"
"When it involves the trachea, the posterior membrane is also classically involved 2. CT is also considered to be useful in assessing the extra-luminal extent of disease 5."
"Plain film findings are often non-specific, difficult and may even be normal in up to 25% of cases 2. There can be nodular and irregular narrowing of the tracheal lumen. Lobar or segmental collapse may be seen as a secondary feature due to endobronchial obstruction from amyloid deposition."