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Mesenchymal hamartoma of the chest wall in infancy—a case report of this rare entity with cytologic findings

Mesenchymal hamartoma of the chest wall (MHCW) in infancy, known also as vascular and cartilaginous hamartoma or mesenchymoma, is a very rare benign tumour, arising from the ribs, usually presenting in neonatal period. Review of the literature provides no more than 54 documented cases. In none of the reported cases was fine needle aspiration (FNA) biopsy performed. In the following case report we present the cytologic features of this rare entity.