Allergic Polyposis

Fig. 2.1. a Allergic polyp with marked oedema of the stroma and heavy infiltration by eosinophils. b Atypical fibroblasts in an inflammatory allergic polyp: enlarged fibroblasts with bizarre nuclei and occasional prominent nucleoli appear interspersed in granulation tissue
Fig. 2.2 a Respiratory epithelial adenomatoid hamartoma: glandular-like spaces lined by respiratory epithelium and supported by fibrous stroma. b Glandular hamartoma: abundant nodular aggregates of modified seromucous glands supported by slightly oe-dematous stroma

[7]. In addition, scattered, enlarged, stromal cells with hyperchromatic nuclei are not an uncommon finding in this type of polyp [235]. Those polyps that arise in the maxillary antrum and extend into the middle meatus projecting anteriorly are known as antronasal polyps.

sion is termed "respiratory epithelial adenomatoid hamartoma" (Fig. 2.2a). If the glandular component consists of seromucous glands they are known as "glandular hamartomas" (Fig. 2.2b). "Mesenchymal hamartomas" show predominance of skeletal muscle or of other mes-enchymal elements.

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