Inflammatory choroidal neovascular membrane after healed tuberculous choroidal granuloma

Sikander A K Lodhi1, Khadija Saifuddin1, Santhosh Devulapally1

  • 1Sarojini Devi Eye Hospital / Osmania Medical College, Hyderabad. India.

Insights

Tuberculous granuloma can mimic intraocular tumors. While anti-tuberculous treatment heals the lesion, it can lead to choroidal neovascular membrane (CNVM) development, requiring anti-VEGF therapy.

Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Oncology

Background:

  • Choroidal granulomas present diagnostic challenges, often mimicking intraocular tumors.
  • Tuberculosis is a potential cause of choroidal granulomas, necessitating systemic evaluation.

Observation:

  • A 42-year-old female presented with vision loss due to a choroidal mass, initially suspected as a tumor.
  • Positron emission tomography (PET) scan revealed enlarged lymph nodes, and biopsy confirmed caseating granulomas consistent with tuberculosis.

Findings:

  • Anti-tuberculous treatment led to granuloma resolution and vision improvement, forming a scar.
  • Six months post-treatment, a choroidal neovascular membrane (CNVM) developed at the scar margin, causing vision deterioration.
  • Intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections successfully resolved the CNVM.

Implications:

  • Accurate diagnosis of tuberculous granuloma requires a high index of suspicion and comprehensive systemic workup.
  • PET scans are valuable for identifying suitable lymph nodes for biopsy in suspected cases.
  • Close monitoring of healed tuberculous choroidal lesions is crucial for early detection and management of post-inflammatory CNVM.