Open AccessTumors colliding in thyroid: A case report
Author(s) -
Sayali Shinde,
Smita Sawant
Publication year - 2022
Publication title -
indian journal of pathology and oncology
Language(s) - English
Resource type - Journals
eISSN - 2394-6792
pISSN - 2394-6784
DOI - 10.18231/j.ijpo.2022.016
Subject(s) - thyroid , pathology , histopathology , malignancy , papillary carcinoma , thyroid carcinoma , medicine , medullary cavity , clinical pathology , medullary carcinoma
The synchronous presence of two histologically distinct and morphologically independent primary malignancies within the same organ is termed as collision tumor. However, these tumors are rare and many theories like stem cell theory, hostage theory, collision theory are proposed to explain their occurrence. The most frequently encountered collision tumor in the thyroid gland is of papillary carcinoma and medullary carcinoma. We report an extremely rare case of 41 year old female with papillary and follicular collision tumor. The diagnosis of synchronous thyroid malignancy was made on histopathology of the excised tissue.