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Table 2 Distribution of glioma in rural/urban areas of India on basis of histopathology

From: Trends in clinico-epidemiology profile of surgically operated glioma patients in a tertiary care center over 12 years—through the looking glass!

Series Pilocytic Ast Diffuse Ast Anaplastic Ast OGD Mixed Ast Glioblastoma Neuroblastoma Epd Anaplastic Epd Lymphoma NST Unspecified
Urban
 Manoharan N (Delhi) 411/1989 83/1989 505/1989 428/1989 31/1989 43/1989 12/1989 18/1989 332/1989
 Jalali R (Mumbai) 36/656 48/656 49/656 19/656 19/656 102/656 60/656 46/656 NR 23/656
 Narmadha R (Chennai) 158/890 40/890 163/890 16/890 42/890 9/890 103/890
 Mondal S (Kolkata) 54/130 11/130 7/130 5/130 1/130 9/130
Rural
 Ghangoria S (Indore) 16/65 NR NR 5/65 NR 5/65
 Thambi R (Kottayam) 128/510 2/510 12/510 NR NR 7/510 5/510 71/510
 Jaiswal J* (Bangalore) 235/1800 23/1800 128/1800 53/1800 57/1800 598/1800 NR 201/1800 NR NR
 Chawala N& (Rohtak) 43/77 0   3/77    
Present study 92/1450 325/1450 99/1450 65/1450 69/1450 600/1450 NR 10/1450 33/1450
  1. **In the study from Jaiswal J, from Bangalore, they separately mentioned anaplastic OGD, anaplastic oligoastroctyoma, and anaplastic astrocytoma; with a separate mention of oligoastrocytoma. Some other studies considered them as mixed glioma or unspecified. So, this part was confusing and a prospective study with WHO 2016 classification may better provide exact prevalence
  2. &Chawala n et al. quoted 44.18% were grade II while grade III and grade IV constituted 20.9% in their study. The distribution was different as grade IV glioma in other studies were predominant