Saab Hussien, Bajaj Tushar, Bains Kirandeep, Garcia-Pacheco Ralph
1 UCLA-Kern Medical, Bakersfield, CA, USA.
2 Ross University School of Medicine, Miramar, FL, USA.
J Investig Med High Impact Case Rep. 2019 Jan-Dec;7:2324709619846594. doi: 10.1177/2324709619846594.
Diffuse alveolar hemorrhage (DAH) is a life-threatening clinicopathologic condition caused by accumulation of intra-alveolar red blood cells (RBCs) after disruption of the alveolar-capillary basement membrane that is often seen as a complication of various diseases, but is rare in systemic sclerosis. A 46-year-old female with systemic sclerosis presented to the emergency department complaining of right-sided chest pain. Initially, her electrocardiogram and chest X-ray (CXR) were unremarkable; however, she progressively decompensated into acute respiratory failure resulting in intubation. Repeat CXR and computed tomography scan showed diffuse bilateral alveolar infiltrates and pleural effusions. Video bronchoscopy with bronchoalveolar lavage showed numerous RBCs, neutrophils, macrophages, and respiratory epithelial cells consistent with acute DAH. She was started on intravenous pulse-dosing Solu-Medrol 1 g daily for 5 days. One month later, the patient returned with intractable nausea and vomiting. Again, she went into acute respiratory distress with a PaO of 59 while on a 10-L non-rebreather mask. CXR revealed development of alveolar infiltrates in the right lung. A bronchoscopy with bronchoalveolar lavage again showed numerous RBCs and neutrophils along with staining positive for hemosiderin-laden macrophages. Systemic sclerosis with alveolar hemorrhage is a rare occurrence; however, most cases are single episodes of hemorrhage, whereas we present a case with 2 confirmed episodes within 30 days. Its life-threatening nature makes a systemic approach and aggressive treatment crucial to decreasing morbidity and mortality-making it a diagnosis that should not be overlooked, especially in patients with nonspecific symptoms.
弥漫性肺泡出血(DAH)是一种危及生命的临床病理状况,由肺泡 - 毛细血管基底膜破坏后肺泡内红细胞(RBC)积聚引起,常作为各种疾病的并发症出现,但在系统性硬化症中罕见。一名46岁的系统性硬化症女性患者因右侧胸痛就诊于急诊科。最初,她的心电图和胸部X线(CXR)无异常;然而,她逐渐病情恶化,发展为急性呼吸衰竭并接受了气管插管。复查CXR和计算机断层扫描显示双侧弥漫性肺泡浸润和胸腔积液。经支气管镜肺泡灌洗显示大量红细胞、中性粒细胞、巨噬细胞和呼吸道上皮细胞,符合急性DAH表现。开始给予她静脉注射甲泼尼龙琥珀酸钠1g/d,连续5天。1个月后,患者因顽固性恶心和呕吐再次就诊。同样,她在使用10L非重复呼吸面罩时出现急性呼吸窘迫,动脉血氧分压(PaO)为59。CXR显示右肺出现肺泡浸润。再次进行支气管镜肺泡灌洗,显示大量红细胞和中性粒细胞,同时含铁血黄素巨噬细胞染色呈阳性。系统性硬化症合并肺泡出血很少见;然而,大多数病例为单次出血事件,而我们报告了1例在30天内发生2次确诊出血事件的病例。其危及生命的性质使得采取系统性方法和积极治疗对于降低发病率和死亡率至关重要——这使其成为一种不应被忽视的诊断,尤其是在有非特异性症状的患者中。