Aplasia versus pancytopenia, including the pure red cell variant

This is the first in our third series of clinical vignettes that are centred on everyday presentations. Each emphasises practical aspects of team-based care, having relevance for general practitioners, specialists and paramedical professionals alike. Disorders arising in blood and bone marrow result in some of the commonest symptoms and signs for which patients seek medical advice. A carefully taken history and meticulous physical examination, complemented by thoughtful and judicious use of laboratory tests, provide the clinical basis for a working diagnosis. Advanced haematology may be needed to extend evaluation to the bone marrow and plasma while supplementary imaging or radionuclide technology further links primary care practitioner or specialist to the experienced haematologist. Such a multidisciplinary and fully interactive approach offers the preferred way to problem solving and optimum management.