Evidence map›Paper›PMID 42157119›Full record

ArticleBMC infectious diseases2026

Cutaneous MAC infection in an immunocompetent patient: a case report confirmed by mNGS.

Quan-Xiang Li, Li-Zhong Luo

Abstract readCase Reports
In one paragraph

Article in BMC infectious diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

2 authors.

Quan-Xiang LiDepartment of General Practice, Fusui County People's Hospital, Fusui County, Chongzuo City, Guangxi Zhuang Autonomous Region, 532199, China.
Li-Zhong LuoDepartment of General Practice, Fusui County People's Hospital, Fusui County, Chongzuo City, Guangxi Zhuang Autonomous Region, 532199, China. 447089110@qq.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCutaneous infections caused by non-tuberculous mycobacteria (NTM) are rare. Atypical clinical manifestations and the need for precise microbiological identification often result in misdiagnosis and underdiagnosis. CASE PRESENTATION: A 65-year-old immunocompetent female initially presented with papular urticaria. Her symptoms improved transiently after anti-inflammatory treatment, but the lesions rapidly progressed to generalized erythematous nodules and ulcers accompanied by fever and lymphadenopathy. Routine microbiological culture and histopathological examination yielded negative results, while metagenomic next-generation sequencing (mNGS) identified Mycobacterium avium complex (MAC) as the causative pathogen.Triple antimicrobial therapy (clarithromycin, doxycycline, and levofloxacin) a favorable clinical response. This case indicates that cutaneous non-tuberculous mycobacterial (NTM) infection has atypical clinical manifestations and is frequently misdiagnosed as common cutaneous eruptions. mNGS can serve as a key diagnostic tool for suspected cutaneous NTM infection, effectively reducing misdiagnosis and missed diagnosis and providing a reliable basis for clinical diagnosis and treatment.

conclusionCutaneous MAC infection, though rare, may occur in immunocompetent individuals. Clinicians should suspect NTM infection in treatment-refractory skin lesions. mNGS is valuable for etiological diagnosis when conventional tests are negative.

Indexed as

Mycobacterium avium ComplexMycobacterium avium-intracellulare InfectionSkin Diseases, BacterialAgedAnti-Bacterial AgentsClarithromycinDoxycyclineFemaleHigh-Throughput Nucleotide SequencingHumansImmunocompetenceAnti-Bacterial AgentsClarithromycinDoxycyclineCutaneous infectionImmunocompetent patientMetagenomic next-generation sequencingMycobacterium avium complexNon-tuberculous mycobacteria

Identifiers

PMID42157119
PMCPMC13366679

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