Thymus Neoplasia

()Map LYMPHORETICULAR & HAEMATOPOIETIC SYSTEM (Map) PRIMARY LYMPHOID SYSTEM

Anatomy & physiology

See here

Pathology

Tumours of the Thymus

• Benign

- Thymoma (localised)

- predominantly epithelial

- predominantly lymphocytic

• Malignant

- Thymic lymphosarcoma

- poorly encapsulated

- atrial and heart base infiltration

- infiltration beneath sternal pleura

- involvement of lung unusual

Rhodococcus equi

• pathogen of the equine lung (and intestine)
• cutaneous abscesses, cellulitis in young horses
• CELLULITIS = deep suppurative infection often dissecting through tissue planes