Venkatswami Sandhya, Sankarasubramanian Anandan, Subramanyam Shobana
Sri Ramachandra University, Chennai, India.
Int J Low Extrem Wounds. 2012 Mar;11(1):31-42. doi: 10.1177/1534734612438549. Epub 2012 Feb 14.
"Mycetoma" means a fungal tumor. Mycetoma is a chronic, granulomatous, subcutaneous tissue infection caused by both bacteria (actinomycetoma) and fungi (eumycetoma). This chronic infection was termed Madura foot and eventually mycetoma, owing to its etiology. Inoculation commonly follows minor trauma, predominantly to the foot and hence is seen more among the barefoot-walking populations, common among adult males aged 20 to 50 years. The hallmark triad of the disease includes tumefaction, fistulization of the abscess, and extrusion of colored grains. The color of these extruded grains in the active phase of the disease offers a clue to diagnosis. Radiology, ultrasonology, cytology, histology, immunodiagnosis, and culture are tools used in diagnosis. Recently, DNA sequencing has also been used successfully. Though both infections manifest with similar clinical findings, Actinomycetoma has a rapid course and can lead to amputation or death secondary to systemic spread. However, actinomycetomas are more responsive to antibiotics, whereas eumycetomas require surgical excision in addition to antifungals. Complications include secondary bacterial infections that can progress to full-blown bacteremia or septicemia, resulting in death. With extremely disfiguring sequelae, following the breakdown of the nodules and formation of discharging sinuses, it poses a therapeutic challenge.
“足菌肿”指的是一种真菌性肿瘤。足菌肿是一种由细菌(放线菌性足菌肿)和真菌(真菌性足菌肿)引起的慢性、肉芽肿性皮下组织感染。由于其病因,这种慢性感染最初被称为马杜拉足,最终被命名为足菌肿。感染通常在轻微创伤后发生,主要累及足部,因此在赤足行走人群中更为常见,常见于20至50岁的成年男性。该病的典型三联征包括肿胀、脓肿形成瘘管以及排出有色颗粒。疾病活动期这些排出颗粒的颜色为诊断提供了线索。放射学、超声学、细胞学、组织学、免疫诊断和培养是用于诊断的工具。最近,DNA测序也已成功应用。尽管两种感染的临床表现相似,但放线菌性足菌肿病程进展迅速,可因全身播散导致截肢或死亡。然而,放线菌性足菌肿对抗生素更敏感,而真菌性足菌肿除抗真菌药物外还需要手术切除。并发症包括继发细菌感染,可发展为严重的菌血症或败血症,导致死亡。结节破溃并形成引流窦道后会留下极其毁容的后遗症,这带来了治疗挑战。