■坏疽性坏疽(EG)是潜在的铜绿假单胞菌感染的相对罕见的皮肤表现,临床上被描述为坏疽性溃疡被红斑晕包围。EG的病例可能在没有菌血症的情况下发生,并且越来越多的文献报道。在这里,我们介绍了一个具有EG和脂膜炎特征的患者,尽管缺乏潜在的菌血症。
一名57岁的男性出现在急诊科,患有持续四至五天的右侧下背部疼痛和“瘙痒和疼痛”皮疹。该患者有广泛的静脉药物滥用史,并因假单胞菌菌血症多次住院。经检查,有弥漫的,腹部红斑皮下结节和几个个体坏死性溃疡,上肢和下肢,被红斑光环包围。MRI显示右侧椎旁区域肌炎和水肿,血培养假单胞菌呈阴性。
■EG通常被分类为细菌性或非细菌性,在没有菌血症的情况下,脂膜炎的报告有限。该患者的表现对于非细菌性EG伴脂膜炎的弥漫性表现是不寻常的。由于患者过去的深种子假单胞菌感染病史,细菌可以直接接种到不同注射部位的皮肤中。
■虽然EG是一种少见但公认的假单胞菌菌血症的皮肤病学特征,据报道,脂膜炎较不常见,也可能被低估。医生应该意识到潜在的假单胞菌感染的皮肤表现,因此可以开始适当的抗生素治疗。
UNASSIGNED: Ecthyma gangrenosum (EG) is a relatively uncommon cutaneous manifestation of an underlying Pseudomonas aeruginosa infection and is clinically described as necrotic with gangrenous ulcers surrounded by erythematous halos. Cases of EG may occur in the absence of bacteremia and have been increasingly reported in literature. Here we present a patient with features of both EG and panniculitis, despite the lack of underlying bacteremia.
UNASSIGNED: A 57-year-old male presented to the emergency department with unrelenting right-sided lower back pain and an \"itchy and painful\" rash of four to five day duration. The patient had an extensive history of intravenous drug abuse and had been hospitalized multiple times for Pseudomonas bacteremia. Upon examination, there were diffuse, erythematous subcutaneous nodules and several individual necrotic ulcerations on the abdomen, upper and lower extremities, surrounded by erythematous halos. An MRI revealed myositis and edema in the right paraspinal region, and blood cultures were negative for Pseudomonas.
UNASSIGNED: EG is typically classified as bacteremic or non-bacteremic in nature, and there are limited reports of panniculitis in the absence of bacteremia. This patient\'s presentation was unusual for the diffuse presentation of non-bacteremic EG with panniculitis. Due to the patient\'s past medical history of deep-seeded Pseudomonas infections, bacteria could have been directly inoculated into the skin at various injection sites.
UNASSIGNED: While EG is an uncommon but well-recognized dermatologic feature of Pseudomonas bacteremia, panniculitis is reportedly less commonly and likely underrecognized. Physicians should become aware of the cutaneous manifestations of underlying Pseudomonas infection so appropriate antibiotic therapy can be initiated.