scholarly journals The Appendix: A Rare Case of an Appendiceal Collision Tumor

Cureus ◽  
2021 ◽  
Author(s):  
Samuel G Ruiz ◽  
Feargal Geraghty ◽  
Dalina Padron ◽  
Daniel Chacon ◽  
Gerardo Kahane
Keyword(s):  
Rare Case ◽  
Collision Tumor

scholarly journals A rare case of collision tumor of thyroid gland: simultaneous occurrence of calcitonin negative medullary thyroid carcinoma and papillary thyroid carcinoma

2019 ◽  
Vol 5 (6) ◽  
pp. 1726
Author(s):  
Savita Saharan ◽  
Ranjana Solanki ◽  
Deepak Saharan
Keyword(s):  
Papillary Thyroid Carcinoma ◽  
Thyroid Carcinoma ◽  
Medullary Thyroid Carcinoma ◽  
Rare Case ◽  
Collision Tumor ◽  
Simultaneous Occurrence ◽  
Rare Entity ◽  
Papillary Thyroid ◽  
Medullary Thyroid ◽  
Cellular Origin

<p>Medullary thyroid carcinoma and papillary thyroid carcinoma are two distinct types of thyroid carcinoma having different cellular origin. The simultaneous occurrence of two distinct neoplasms termed “collision tumour” and it is a rare entity. Sometimes the medullary component does not show calcitonin positivity and hence this becomes a very rare entity. Herein we describe a very rare case of simultaneous occurrence of calcitonin negative medullary thyroid carcinoma and papillary thyroid carcinoma.</p>

Collision Tumor of the Stomach: A Rare Case of an Adenocarcinoma and Carcinoid Tumor

2005 ◽  
Vol 129 (3) ◽  
pp. 407-409
Author(s):  
Yukie Morishita ◽  
Masahiko Sugitani ◽  
Aleemuzzaman Sheikh ◽  
Norimichi Nemoto ◽  
Masashi Fujii ◽  
...  
Keyword(s):  
Carcinoid Tumor ◽  
Rare Case ◽  
Collision Tumor ◽  
Endoscopic Examination ◽  
Tubular Adenocarcinoma ◽  
Typical Carcinoid ◽  
Tissue Proliferation ◽  
Transition Area ◽  
Collision Type ◽  
Resected Tumor

Abstract We report a rare case of gastric collision tumor composed of moderately differentiated tubular adenocarcinoma and carcinoid in an 84-year-old woman. On endoscopic examination, an invasive tumor was noted at the cardia of the stomach, and a pathologic examination of the biopsy specimen revealed adenocarcinoma. After total gastrectomy, a thorough histopathologic examination of the resected tumor revealed the concurrent presence of moderately differentiated adenocarcinoma and a typical carcinoid tumor, which had a colliding pattern of tissue proliferation. There was no intermixing or transition area between the 2 components. The final pathologic diagnosis was collision tumor of the adenocarcinoma and carcinoid tumor. The presence of either tumor individually would not be especially noteworthy, but this collision-type tumor of both histopathologic types in the stomach is, to our knowledge, only the sixth such case in the literature.

Pituitary Adenoma and Papillary Craniopharyngioma: A Rare Case of Collision Tumor and Review of the Literature

2020 ◽  
Vol 139 ◽  
pp. 63-69
Author(s):  
Fred Bteich ◽  
Lea El Khoury ◽  
Georges Nohra ◽  
Viviane Trak ◽  
Sandrine Yazbek ◽  
...  
Keyword(s):  
Pituitary Adenoma ◽  
Rare Case ◽  
Collision Tumor ◽  
Review Of The Literature

scholarly journals An Approach to a Rare Case of Collision Tumor of Follicular and Papillary Carcinomas of the Thyroid

2020 ◽  
Vol 12 (2) ◽  
pp. 35-37
Author(s):  
Rahul S Gosavi ◽  
Akash D Gupta ◽  
Shishir D Gosavi ◽  
Milind H Patwardhan
Keyword(s):  
Rare Case ◽  
Collision Tumor

scholarly journals Collision tumor of the palate: A rare case report

2014 ◽  
Vol 5 (1) ◽  
pp. 102 ◽  
Author(s):  
Farzan Rahman ◽  
ShoaibR Tippu ◽  
Neha Sharma ◽  
Shalabh Srivastava
Keyword(s):  
Case Report ◽  
Rare Case ◽  
Collision Tumor ◽  
Rare Case Report

scholarly journals Collision Tumor of the Stomach

2021 ◽  
pp. 400-407
Author(s):  
Kimitoshi Kubo ◽  
Ryo Takahashi ◽  
Noriko Kimura ◽  
Norishige Maiya ◽  
Soichiro Matsuda ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Preoperative Diagnosis ◽  
Rare Case ◽  
Distal Gastrectomy ◽  
Collision Tumor ◽  
Anterior Wall ◽  
Elevated Lesion ◽  
Stage Ia ◽  
Depressed Lesion ◽  
Lesser Curvature

Collison tumor of the stomach is rare, and its endoscopic and pathological features remain poorly described. A 70-year-old woman was referred to our hospital for examination and treatment of undifferentiated gastric cancer. Esophagogastroduodenoscopy revealed a whitish, superficial elevated lesion in contact with a reddish, superficial depressed lesion from the anterior wall of the gastric angle and antrum to the lesser curvature. Laparoscopic distal gastrectomy was performed for preoperative diagnosis of suspected early gastric cancer presenting as a differentiated and undifferentiated collision tumor, which led to the lesion being diagnosed as collision tumor, tub1-tub2+por1-sig, pT1a (M), ly0, v0, N0, stage IA. To our knowledge, this report represents a valuable addition to the collision tumor literature describing a rare case of preoperatively diagnosed collision tumor of the stomach.

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