Unknown primary tumours

Primary tracheal tumours.

Primary Brain Tumours

Introduction Primary CNS neoplasms represent 2% of all cancers and are the sixth most common group of tumours in adults and the second most common form of cancer in children, accounting for 20% of cancers in children under the age of 15 years. Although the incidence of tumours metastatic to the central nervous system outnumbers the combined incidence of tumours arising in the brain, spinal cord...

Primary intrathoracic neural tumours.

TERMINOLOGY Each axon cylinder is encased in a sheath of Schwann cells, and the tumour arising from this, the specific nerve sheath, is the Schwannoma or neurilemmoma. Groups of axon cylinders comprising a peripheral nerve are enmeshed in a non-specific sheath of fibrous tissue, and tumours arising from this non-specific nerve sheath are neurofibromata. In some nerve sheath tumours clear histol...

Primary mediastinal tumours.

seen over a five-year period is presented. Clinical and pathological features of a heterogeneous group of tumours are emphasized. Since a number of patients presented with mild symptoms or were asymptomatic (especially adults), the importance of routine chest radiographs is stressed. Complete excision was accomplished in all patients with benign lesions. Malignant lesions were usually partially...

Primary Bone Tumours

Synovial chondromatosis Table 108.1: WHO classification of bone tumours. Introduction Bone tumours in childhood cause considerable anxiety to both the affected child and the parents. They may present with vague symptoms or a fracture and can easily be confused with osteomyelitis or some tumour-like lesions that may be developmental in origin. Benign lesions account for 50% of all bone lesions; ...