Copyright ©ERS Journals Ltd 2001 Acute lung injury associated with 5-fluorouracil and oxaliplatinum combined chemotherapy1 Dept Thoracic Diseases and 5 Anatomic Pathology, Bellaria and Maggiore Hospitals, Bologna, Italy; 2 Dept Respiratory Diseases, S. Matteo University Hospital, Pavia, Italy; 3 Dept of Oncology, City Hospital, Rimini, Italy; 4 Institute of Hematology and Clinical Oncology "L & A Seragnoli", S. Orsola University Hospital, Bologna, Italy CORRESPONDENCE: V. Poletti, Dept of Thoracic Diseases, Bellaria and Maggiore Hospital, Largo Nigrisoli 2, 40133, Bologna, Italy. Fax: 39 0516478727 Keywords: chemotherapy, diffuse alveolar damage, drug-induced toxicity, 5-fluorouracil, oxaliplatinum, rectum carcinoma
Received: January 22, 2001 Abstract
Diarrhoea, T-CD4+ lymphopenia and bilateral patchy pulmonary infiltrates developed in a male 60 yrs of age, who was treated with oxaliplatinum and 5-fluorouracil for unresectable rectum carcinoma. The findings from transbronchial lung biopsy and bronchoalveolar lavage (BAL) were consistent with an organizing diffuse alveolar damage pattern. Once extensive microbiological studies proved negative, corticosteroids were given and a complete remission of clinical and radiological abnormalities was achieved. It is concluded that the aforementioned pathological manifestations were due to chemotherapy and included a pulmonary adverse reaction, a feature never previously associated with oxaliplatinum and 5-fluorouracil regimens.
Case report
In February 2000, a nonsmoking male, 60 yrs of age, was referred to the Dept of Thoracic Diseases (Bellaria and Maggiore Hospitals, Bologna, Italy) complaining of a 10-day history of nausea, anorexia, diarrhoea, asthenia and dyspnoea. He was affected by unresectable rectum carcinoma and had received seven cycles of L-OHP (130 mg·m2 at day 1, as a 2 h infusion) plus 5-FU (300 mg·m2 as bolus infusion at days 15, reduced to 250 mg·m2 after the first course, because of the onset a grade 3 World Health Organization neutropenia) and folinic acid (20 mg·m2 as bolus infusion at days 15) combined chemotherapy. His past clinical history only included mild arterial hypertension. On admission, the patient had a body temperature of 36.5°C, a blood pressure of 110/80 mmHg, a heart rate of 135 min1, and a respiratory frequency of 26 min1. Physical examination revealed a marked dehydration. Lung auscultation revealed bibasilar inspiratory crackles. A chest radiograph film showed parenchymal infiltrates in both the lower fields. Blood cell count was significant for a T-CD4+ lymphocyte count of 211·mL1. Erythrocyte sedimentation rate at 1 h was 131 mm. Blood chemistries revealed signs of renal failure (urea 265 mg·dL1; creatinine at 4.6 mg·dL1); reduction of K+ at 2.9 mEq·L1; elevation of lactate dehydrogenase at 368 U·L1 and of Ca19.9 at 76.7 mg·dL1. Arterial blood gas analysis while breathing room air were: arterial oxygen tension (Pa,O2) 55 mmHg; arterial carbon dioxide tension (Pa,CO2) 18.5 mmHg; pH 7.5; HCO3 14.9 mEq·L1; base excess 5.0. Once a 7-day broad-spectrum antibiotic IV therapy had failed to achieve any clinical and/or radiological improvement of respiratory abnormalities, high-resolution computed tomography (HRCT) of the chest (areas of ground glass attenuation and alveolar consolidation, mainly involving the lower lobes; fig. 1
Discussion The acute onset of nausea, diarrhoea (with dehydration and secondary renal failure), T-CD4+ lymphopenia and lung damage were reported in a patient who had been treated with seven courses of combined chemotherapy with L-OHP and 5-FU. Unlike gastrointestinal and haematological toxicity, no pulmonary adverse reactions had been associated with this regimen up to now 24. Based on HRCT and/or histological findings, the differential diagnosis of the pulmonary changes in the present case report could be narrowed to a few pathological conditions such as infections, malignancies, pulmonary haemorrhage and drug-induced toxicity. An infectious aetiology, which was strongly considered mainly due to the concomitant presence of a T-CD4+ lymphopenia, was reliably ruled out by extensive microbiological studies on BAL-fluid and lung biopsy. Moreover, the patient had never experienced fever and did not improve in spite of a broad spectrum antibiotic therapy, whereas it was cured by using corticosteroids. The hypothesis of malignancies, either primary lung cancer (i.e. bronchioloalveolar carcinoma and mucosa-associated lymphoid tissue (MALT) lymphomas) or metastatic involvement could also be raised by chest HRCT features 57. In particular, colorectal cancer may spread in the lung with a rare pattern, known as "lepidic growth", which is histologically characterized by the growth of malignant cylindrical cells over the alveolar wall and can be associated with HRCT findings like those observed in this case 8. Such a diagnosis was, however, easily excluded by examining lung biopsy and ascertaining the favourable outcome. Besides, BAL and lung biopsy findings did not support the diagnosis of pulmonary haemorrhage. Together with the careful exclusion of these causes, several elements led to the suspicion that the lung damage was expression of drug-induced toxicity. In the first instance, the onset of the respiratory changes was concomitant with that of gastrointestinal and haematological ones, which are among the most common complications of L-OHP and 5-FU treatment 24. Furthermore, both cytological (BAL) and histological pulmonary findings, although not specific, could support the diagnosis of drug-induced toxicity 9. Finally, corticosteroids had to be given to achieve a complete remission of clinicoradiological respiratory abnormalities after broad spectrum antibiotics had failed to warrant any improvement. It is, however, difficult to define the individual contributions of L-OHP and 5-FU in the determinism of this pulmonary damage, mainly because no cases of lung toxicity have been attributed either to platinum derivative (cisplatinum, carboplatinum, oxaliplatinum) or 5-FU when used as monotherapy. The present authors are only aware of cases of pharyngolaryngeal discomfort and inspiratory stridor observed after L-OHP administration 10. Conversely, three cases of interstitial lung disease/fibrosis have been associated with combined chemotherapy including 5-FU. Jeanfaivre et al. 11 described a case of acute pulmonary fibrosis in a patient treated with 5-FU and cisplatinum. Fielding and coworkers 12, 13 reported two cases of interstitial lung disease complicating 5-FU plus mitomycin C combined chemotherapy 12, 13. The pathological findings in this report's patient had an alveolar rather than interstitial distribution and were consistent with a DAD pattern in the organizing phase. In fact, TBB specimens revealed intra-alveolar fibrotic buds and hyperplastic/dysplastic epithelial cells. BAL-fluid analysis confirmed the presence of DAD cells and showed a marked increase of the neutrophils percentage. These findings, coupled with clinicoradiological data, led to the categorization of such an adverse reaction as organizing acute lung injury. As far as the pathogenesis is concerned, the negativity of lymphocyte stimulation tests with either L-OHP or 5-FU tends to suggest the importance of a direct toxic effect of the drugs on the parenchymal structures rather than that of immunologically-driven mechanisms. It is concluded that oxaliplatinum and 5-fluorouracil combined chemotherapy can cause acute lung toxicity. In the case reported, a good clinical and radiological respiratory abnormalities responsiveness to corticosteroids was assessed.
References
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