Original clinical science
Post-transplant lymphoproliferative disorder after lung transplantation: A review of 35 cases

https://doi.org/10.1016/j.healun.2011.10.013Get rights and content

Background

Post-transplant lymphoproliferative disorder (PTLD) is a complication of organ transplantation. The risk of developing PTLD varies depending on a number of factors, including the organ transplanted and the degree of immunosuppression used.

Methods

We report a retrospective analysis of 35 patients with PTLD treated at our center after lung transplantation. Of 705 patients who received allografts, 34 (4.8%) developed PTLD. One patient underwent transplantation elsewhere and was treated at our center.

Results

PTLD involved the allograft in 49% of our patients and the gastrointestinal (GI) tract lumen in 23%. Histologically, 39% of tumors were monomorphic and 48% polymorphic. The time to presentation defined the location and histology of disease. Of 17 patients diagnosed within 11 months of transplantation, PTLD involved the allograft in 12 (71%) and the GI tract in 1 (p = 0.01). This “early” PTLD was 85% polymorphic (p = 0.006). Conversely, of the 18 patients diagnosed more than 11 months after transplant, the lung was involved in 5 (28%) and the GI tract in 7 (39%; p = 0.01). “Late” PTLD was 71% monomorphic (p = 0.006). Median overall survival after diagnosis was 18.57 months. Overall survival did not differ between all lung transplant recipients and those who developed PTLD.

Conclusions

PTLD is an uncommon complication after lung transplantation, and its incidence declined remarkably in the era of modern immunosuppression. We report several factors that are important for predisposition toward, progression of, and treatment of PTLD after lung transplantation.

Section snippets

Materials and methods

The records of all lung transplant patients treated for PTLD at the HUP Abramson Cancer Center were reviewed. All patients received induction immunosuppression with anti-thymocyte globulin (ATG), daclizumab, or basiliximab. Maintenance immunosuppression regimens included a combination of prednisone, a calcineurin inhibitor (cyclosporine or tacrolimus) and an anti-proliferative agent (azathioprine, mycophenolate mofetil [MMF], or sirolimus).

The presence of disease was confirmed in all patients

Patient characteristics

Between December 1991 and March 2011, 705 patients underwent lung transplantation at the HUP and PTLD developed in 34 (4.8%). One additional patient underwent transplantation at another institution but was treated for PTLD at HUP. Characteristics of our PTLD population are summarized in Table 1. The median age of patients at transplantation of 52 years (range, 21–65 years), and 17 (49%) were women. The most common indication for transplantation was chronic obstructive pulmonary disease,

Discussion

Solid organ transplantation is a well-known risk factor for malignancy.24 It has been postulated that this is due to decreased immunologic surveillance as a consequence of post-transplant immunosuppression.3, 24, 25, 26, 27 One complication of transplantation is PTLD, which has been observed with varying frequency after every type of solid organ transplantation. Although PTLD is more commonly observed after lung transplantation than with other organs,6 it is still a rare disease, with very few

Disclosure statement

None of the authors has a financial relationship with a commercial entity that has an interest in the subject of the presented manuscript or other conflicts of interest to disclose.

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