A low mean corpuscular volume with a normal and cell distribution width suggests -
In thalassemia MCV is decreased to 45-70fL &RBC count found to be increased or normal. The RBCs are microcytic and normochromic. Ref: Exam preparatory manual for UGs by Ramdas Nayak Page no:270 Ref Robbins 9/e pg 412
Iron deficiency anemia
B thalassemia trait
Anemia of chronic disease
Sideroblastic anemia
Haematology