WHO Classification of Tumours of the Lung, Pleura, Thymus and Heart 1
Travis WD, Brambilla E, Müller-Hermelink HK, Harris CC (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Lung, Pleura, Thymus and Heart.
3rd Edition
IARC Press: Lyon 2004

C37 - Thymus:

    8580/1 Thymoma, NOS
        8581/1 Thymoma, type A, NOS
        8582/1 Thymoma, type AB, NOS
        8583/1 Thymoma, type B1, NOS
        8584/1 Thymoma, type B2, NOS
        8585/1 Thymoma, type B3, NOS

Thymic carcinoma
    8071/3 Squamous cell carcinoma, keratinizing, NOS
    8123/3 Basaloid carcinoma
    8430/3 Mucoepidermoid carcinoma
    8082/3 Lymphoepithelial carcinoma
    8082/3 Schmincke tumor
    8980/3 Carcinosarcoma, NOS
    8310/3 Clear cell adenocarcinoma, NOS
    8310/3 Clear cell adenocarcinoma, mesonephroid
    8140/3 Adenocarcinoma, NOS
    8050/3 Papillary carcinoma, NOS
    8020/3 Carcinoma, undifferentiated, NOS

Neuroendocrine tumours of the thymus
    8240/3 Carcinoid tumor, NOS
    8240/3 Typical carcinoid
    8240/3 Bronchial adenoma, carcinoid
    8249/3 Atypical carcinoid tumor
    8013/3 Large cell neuroendocrine carcinoma
    8041/3 Small cell carcinoma, NOS
    8041/3 Small cell neuroendocrine carcinoma

Germ cell tumours (GCT) of the mediastinum
    9061/3 Seminoma, NOS
    9070/3 Embryonal carcinoma, NOS
    9071/3 Yolk sac tumor
    9071/3 Hepatoid yolk sac tumor
    9100/3 Choriocarcinoma, NOS
    9072/3 Polyembryoma

Mediastinal lymphomas and haematopoietic neoplasms
    B-cell lymphomas
        9679/3 Mediastinal (thymic) large B-cell lymphoma
    T-cell lymphoma
        9650/3 Hodgkin lymphoma, NOS
    Histiocytic tumours
    9650/3 Hodgkin lymphoma, NOS
        9756/3 Langerhans cell sarcoma
    Dendritic cell tumours
        9758/3 Follicular dendritic cell sarcoma
        9758/3 Follicular dendritic cell tumor
    9930/3 Myeloid sarcoma

Mesenchymal tumours of the thymus and mediastinum
    8850/0 Lipoma, NOS
    8850/3 Liposarcoma, NOS
    8815/0 Solitary fibrous tumor
    8900/3 Rhabdomyosarcoma, NOS
    9040/3 Synovial sarcoma, NOS

Ectopic tumours of the thymus