Naher Naznin, Biswas Sunil K, Imam Hasan, Hasan Md Nazmul
Department of Internal Medicine, Bangabandhu Sheikh Mujib Medical University, Dhaka, BGD.
Cureus. 2025 Feb 17;17(2):e79171. doi: 10.7759/cureus.79171. eCollection 2025 Feb.
Laryngeal histoplasmosis is a rare manifestation of infection by Histoplasma capsulatum, typically resulting from hematogenous dissemination following a primary pulmonary infection. However, primary laryngeal involvement without prior lung disease is uncommon and can present a diagnostic challenge. The disease often mimics laryngeal malignancies or other chronic inflammatory conditions due to its nonspecific symptoms, including progressive hoarseness, dysphagia, odynophagia, fatigue, malaise, and weight loss. Risk factors include immunosuppression, such as HIV/AIDS, prolonged corticosteroid use, or other conditions leading to impaired cellular immunity. Diagnosis requires a high index of suspicion, particularly in endemic regions, and is confirmed through histopathological examination, fungal cultures, or molecular testing of laryngeal biopsy specimens. Due to its rarity, misdiagnosis is common, leading to delays in appropriate antifungal therapy, which primarily consists of itraconazole or amphotericin B in severe cases. Early recognition and treatment are crucial to prevent complications and improve patient outcomes. This report highlights the need for increased awareness of laryngeal histoplasmosis among clinicians to facilitate timely diagnosis and management. We report the case of a 25-year-old male presented with dysphagia and increasing hoarseness of voice over three months, initially suspected to have tuberculosis (TB) but later diagnosed with primary laryngeal histoplasmosis.
喉组织胞浆菌病是荚膜组织胞浆菌感染的一种罕见表现,通常由原发性肺部感染后的血行播散引起。然而,无先前肺部疾病的原发性喉部受累并不常见,可能带来诊断挑战。由于其非特异性症状,包括进行性声音嘶哑、吞咽困难、吞咽痛、疲劳、不适和体重减轻,该疾病常酷似喉恶性肿瘤或其他慢性炎症性疾病。危险因素包括免疫抑制,如艾滋病毒/艾滋病、长期使用皮质类固醇或其他导致细胞免疫受损的情况。诊断需要高度怀疑,特别是在流行地区,并通过组织病理学检查、真菌培养或喉部活检标本的分子检测来确诊。由于其罕见性,误诊很常见,导致抗真菌治疗延迟,严重病例主要使用伊曲康唑或两性霉素B。早期识别和治疗对于预防并发症和改善患者预后至关重要。本报告强调临床医生需要提高对喉组织胞浆菌病的认识,以便及时诊断和管理。我们报告一例25岁男性,出现吞咽困难和声音嘶哑加重三个月,最初怀疑患有结核病,但后来诊断为原发性喉组织胞浆菌病。