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Procedure

Thymectomy Partial thymectomy Other Not specified

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Tumor Size (cm)

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Histologic Type

Type A thymoma Type AB thymoma Type B1 thymoma Type B2 thymoma Type B3 thymoma Squamous cell carcinoma Basaloid carcinoma Mucoepidermoid carcinoma Lymphoepithelioma-like carcinoma Clear cell carcinoma Sarcomatoid carcinoma Adenocarcinoma NUT carcinoma Undifferentiated carcinoma Typical carcinoid Atypical carcinoid Large cell neuroendocrine carcinoma Small cell carcinoma Other histologic type

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Transcapsular Invasion

Present Absent Cannot be determined

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Tumor Extension (select all that apply)

Tumor confined to thymus Tumor extends to the mediastinal fat Tumor involves pulmonary parenchyma Tumor involves mediastinal pleura Tumor invades pericardium Tumor invades diaphragm Tumor invades adjacent organs or structures Other Cannot be assessed Not applicable

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Margins

Cannot be assessed Uninvolved by tumor Involved by tumor

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Treatment Effect

No known presurgical therapy Not identified Present Cannot be determined

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Lymphovascular Invasion

Not identified Present Cannot be determined

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Regional Lymph Nodes

Check here if any lymph nodes submitted?

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Pathologic Staging (pTNM)

TNM Descriptors (select all that apply)

Not applicable m r y

pT

pTX: Primary tumor cannot be assessed pT0: No evidence of primary tumor pT1a: Tumor encapsulated or extending into the mediastinal fat; with no mediastinal pleura involvement pT1b: Tumor encapsulated or extending into the mediastinal fat; with direct invasion of mediastinal pleura pT2: Tumor with direct invasion of the pericardium (either partial or full thickness) pT3: Tumor with direct invasion into any of the following: lung, brachiocephalic vein, superior vena cava, phrenic nerve, chest wall, or extrapericardial pulmonary artery or veins pT4: Tumor with invasion into any of the following: aorta (ascending, arch, or descending), arch vessels, intrapericardial pulmonary artery, myocardium, trachea, esophagus

pN

pNX: Regional lymph nodes cannot be assessed pN0: No regional lymph node metastasis pN1: Metastasis in anterior (perithymic) lymph nodes pN2: Metastasis in deep intrathoracic or cervical lymph nodes

pM

pMx: Not applicable pM1: Pleural, pericardial, or distant metastasis pM1a: Separate pleural or pericardial nodule(s) pM1b: Pulmonary intraparenchymal nodule or distant organ metastasis

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+ Additional Pathologic Findings

Age-appropriate involution changes Fibrosis Follicular thymic hyperplasia Epithelial thymic hyperplasia True thymic hyperplasia Cystic changes in tumor Cystic changes in adjacent thymus Other

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+ Ancillary Studies - Immunohistochemistry