scholarly journals Squamous cell carcinoma mimics small cell carcinoma of the lung: a case report

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Michael Kmeid ◽  
Breanne Gillie ◽  
Armand Asarian ◽  
Philip Xiao

Abstract Squamous cell carcinomas (SCC) accounts for roughly 20% of lung cancers in the USA. The 2015 World Health Organization classification of lung tumors further categorizes SCC as three subtypes: keratinizing, non-keratinizing and basaloid variant. The non-keratinizing subtype is a poorly differentiated tumor that can present histologically in different ways, and one of which is a rare variant that strongly resembles small cell carcinoma. As a result, histological diagnosis alone is not sufficient to properly diagnose lung carcinomas. Immunohistochemistry has been increasingly used over the past few years to differentiate between lung tumors. The combination of morphological and immunohistochemical staining should be the mainstay for diagnosis of all lung carcinomas as more targeted therapies become more available.

1987 ◽  
Vol 73 (5) ◽  
pp. 525-529 ◽  
Author(s):  
Paolo Badiali ◽  
Marco Alloisio ◽  
Luciano Lombardi

A case is reported of the simultaneous occurrence of a squamous cell carcinoma and a small cell carcinoma, both centrally located, in the right upper lobe and a peripheral adenocarcinoma in the right lower lobe. The simultaneous occurrence of three primary lung carcinomas is discussed in the light of a probable common cell origin.


Haigan ◽  
1990 ◽  
Vol 30 (7) ◽  
pp. 1043-1047
Author(s):  
Masazumi Watanabe ◽  
Koichi Kobayashi ◽  
Tsuneo Ishihara ◽  
Akira Kawai ◽  
Takeo Kawashiro ◽  
...  

Cytopathology ◽  
2020 ◽  
Author(s):  
Weihong Ma ◽  
Guy Betts ◽  
Michael Dykes ◽  
Dominic St Leger ◽  
Alexandra Sargent ◽  
...  

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Aymen Lagha ◽  
Nadia Bouzid ◽  
Samia Kanoun Belajouza ◽  
Soumaya Labidi ◽  
Asma Saiidi ◽  
...  

2012 ◽  
Vol 136 (2) ◽  
pp. 163-171 ◽  
Author(s):  
Bradley M. Turner ◽  
Philip T. Cagle ◽  
Irma M. Sainz ◽  
Junya Fukuoka ◽  
Steven S. Shen ◽  
...  

Context.—Differentiation of non–small cell carcinoma into histologic types is important because of new, successful therapies that target lung adenocarcinoma (ACA). TTF-1 is a favored marker for lung ACA but has limited sensitivity and specificity. Napsin A (Nap-A) is a functional aspartic proteinase that may be an alternative marker for primary lung ACA. Objectives.—To compare Nap-A versus TTF-1 in the typing of primary lung carcinoma and the differentiation of primary lung ACA from carcinomas of other sites. Design.—Immunohistochemistry for Nap-A and TTF-1 was performed on tissue microarrays of 1674 cases of carcinoma: 303 primary lung ACAs (18.1%), 200 primary squamous cell lung carcinomas (11.9%), 52 primary small cell carcinomas of the lung (3.1%), and carcinomas of the kidney (n  =  320; 19.1%), thyroid (n  =  96; 5.7%), biliary (n  =  89; 5.3%), bladder (n  =  47; 2.8%), breast (n  =  93; 5.6%), colon (n  =  95; 5.7%), liver (n  =  96; 5.7%), ovaries (n  =  45; 2.7%), pancreas (n  =  48; 2.9%), prostate (n  =  49; 2.9%), stomach (n  =  93; 5.6%), and uterus (n  =  48; 2.9%). Cases were evaluated against a negative control as negative, weak positive, and strong positive. Results.—Nap-A was more sensitive than TTF-1 for primary lung ACA (87% versus 64%; P < .001). Nap-A was more specific than TTF-1 for primary lung ACA versus all tumors, excluding kidney, independent of tumor type (P < .001). Conclusions.—Nap-A is superior to TTF-1 in distinguishing primary lung ACA from other carcinomas (except kidney), particularly primary lung small cell carcinoma, and primary thyroid carcinoma. A combination of Nap-A and TTF-1 is useful in the distinction of primary lung ACA (Nap-A+, TTF-1+) from primary lung squamous cell carcinoma (Nap-A−, TTF-1−) and primary lung small cell carcinoma (Nap-A−, TTF-1+).


2004 ◽  
Vol 18 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Hong Zhang ◽  
Jing Liu ◽  
Philip T Cagle ◽  
Timothy C Allen ◽  
Alvaro C Laga ◽  
...  

2004 ◽  
Vol 128 (11) ◽  
pp. 1279-1282
Author(s):  
Vilkesh R. Jaiswal ◽  
Mai P. Hoang

Abstract Primary laryngeal carcinomas comprise approximately 2% to 5% of all malignancies worldwide. Of these laryngeal carcinomas, approximately 99% are primary squamous cell carcinomas. During the past 30 years, about 160 cases of primary small cell carcinoma of the larynx have been reported. Combined primary squamous and small cell carcinoma of the larynx, the so-called composite tumor of the larynx, is even more rare, with only 13 published cases to date. Although the major risk factors for developing these composite tumors of the larynx are thought to be similar to other more common neoplasms of the larynx, such as squamous cell carcinoma, the treatment and prognosis are different. We report an additional case of combined small cell carcinoma of the larynx and discuss the histogenesis of this unusual neoplasm.


1987 ◽  
Vol 10 (4) ◽  
pp. 330-334 ◽  
Author(s):  
K. Yoneyama ◽  
K. Erhardt ◽  
G. Auer ◽  
L.-G. Wiman ◽  
B. Stenkvist ◽  
...  

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