scholarly journals FNAC Diagnosis of eosinophilic variant of chromophobe renal cell carcinoma – A challenge for cytopathologists

2021 ◽  
Vol 6 (4) ◽  
pp. 283-287
Author(s):  
Jaydeep N Pol ◽  
Neha M Bhosale ◽  
Girish A Kadkol ◽  
Madhura D Phadke ◽  
Swpana S Magdum
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Needle Aspiration ◽  
Chromophobe Renal Cell Carcinoma ◽  
Cellular Heterogeneity ◽  
Renal Oncocytoma ◽  
Cell Renal Cell Carcinoma ◽  
Extent Of Surgery ◽  
Needle Aspiration Cytology

Chromophobe Renal Cell Carcinoma (ChRCC) is a rare distinct subtype of Renal cell carcinoma. It arises from intercalated cells of the renal cortex. The cytomorphological features of ChRCC show significant overlap with Clear cell Renal Cell Carcinoma (CCRCC) and Oncocytoma. The prognosis of ChRCC is intermediate between benign Renal Oncocytoma and the relatively aggressive CCRCC. Hence, a correct pre or intra-operative cytodiagnosis helps in deciding the extent of surgery. We report a case of eosinophilic variant of ChRCC in a 70 years female, diagnosed on Fine Needle Aspiration Cytology (FNAC).The Immunocytochemistry (ICC), histology and Immunohistochemistry confirmed the diagnosis of ChRCC. Diagnosing ChRCC; especially its eosinophilic variant on FNAC is very challenging. Prominent cellular heterogeneity, pleomorphism, perinuclear halos and binucleation are important diagnostic clues for cytodiagnosis of ChRCC. In difficult cases, ICC helps in confirming the diagnosis.

Acid, basic, and neutral peptidases present different profiles in chromophobe renal cell carcinoma and in oncocytoma

2008 ◽  
Vol 294 (4) ◽  
pp. F850-F858 ◽  
Author(s):  
Lorena Blanco ◽  
Gorka Larrinaga ◽  
Itxaro Pérez ◽  
José I. López ◽  
Javier Gil ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Benign Tumor ◽  
Chromophobe Renal Cell Carcinoma ◽  
Renal Oncocytoma ◽  
Tumor Type ◽  
Cell Renal Cell Carcinoma ◽  
High Prevalence ◽  
Insight Into

Renal cell carcinomas (RCCs) are neoplasias with high prevalence and mortality. We previously reported that several peptidases may be involved in the pathophysiology of clear cell renal cell carcinoma (CCRCC). Now, to gain insight into the reasons that lead the various RCC types to behave very differently with regard to aggressiveness and response to anticancer treatments, we analyzed subsets of chromophobe renal cell carcinoma (ChRCC), and renal oncocytoma (RO), a benign tumor; as well as different grades and stages of CCRCCs. Particulate APN, APB, and APA activities were decreased in both ChRCC and RO (tumor vs. nontumor tissues). Interestingly, activities were downregulated in a tumor-type specific way and the intensities of the decreases were stronger in the benign tumor than in the malignant type. Moreover, when two key histopathological parameters for tumor prognosis (high vs. low stage and grade) were analyzed, increases of activity were also observed in several of these cell surface peptidases (APN, APB). Some soluble activities (APB, Asp-AP) were also downregulated in the RCCs. With respect to genetic expression, PSA and APN were in a positive correlation related to their activities in both ChRCC and RO; but not APB, Asp-AP, APA, and PGI. These results may suggest an involvement of several peptidases in the pathophysiology of renal cancer, since they presented different patterns of activity and expression in tumors with different behaviors.

Immunohistochemical Analysis of Chromophobe Renal Cell Carcinoma, Renal Oncocytoma, and Clear Cell Carcinoma: An Optimal and Practical Panel for Differential Diagnosis

2007 ◽  
Vol 131 (8) ◽  
pp. 1290-1297 ◽  
Author(s):  
Lina Liu ◽  
Junqi Qian ◽  
Harpreet Singh ◽  
Isabelle Meiers ◽  
Xiaoge Zhou ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Differential Diagnosis ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Clear Cell ◽  
Clear Cell Carcinoma ◽  
Single Cells ◽  
Chromophobe Renal Cell Carcinoma ◽  
Renal Oncocytoma ◽  
Cell Renal Cell Carcinoma

Abstract Context.—The separation of chromophobe renal cell carcinoma, oncocytoma, and clear cell renal cell carcinoma using light microscopy remains problematic in some cases. Objective.—To determine a practical immunohistochemical panel for the differential diagnosis of chromophobe carcinoma. Design.—Vimentin, glutathione S-transferase α (GST-α), CD10, CD117, cytokeratin (CK) 7, and epithelial cell adhesion molecule (EpCAM) were investigated in 22 cases of chromophobe carcinoma, 17 cases of oncocytoma, and 45 cases of clear cell carcinoma. Results.—Vimentin and GST-α expression were exclusively observed in clear cell carcinoma. CD10 staining was more frequently detected in clear cell carcinoma (91%) than in chromophobe carcinoma (45%) and oncocytoma (29%). CD117 was strongly expressed in chromophobe carcinoma (82%) and oncocytoma (100%), whereas none of the cases of clear cell carcinomas were immunoreactive. Cytokeratin 7 was positive in 18 (86%) of 22 cases of chromophobe carcinoma, whereas all oncocytomas were negative for CK7. EpCAM protein was expressed in all 22 cases of chromophobe carcinoma in more than 90% of cells, whereas all EpCAM-positive oncocytomas (5/17; 29%) displayed positivity in single cells or small cell clusters. Conclusions.—Using the combination of 3 markers (vimentin, GST-α, and EpCAM), we achieved 100% sensitivity and 100% specificity for the differential diagnosis of chromophobe carcinoma, oncocytoma, and clear cell carcinoma. The pattern of “vimentin−/GST-α−” effectively excluded clear cell carcinoma, and homogeneous EpCAM expression confirmed the diagnosis of chromophobe carcinoma rather than oncocytoma. CD117 and CK7 were also useful markers and could be used as second-line markers for the differential diagnosis, with high specificity (100%) and high sensitivity (90% and 86%, respectively).

scholarly journals Combined Immunohistochemistry for the “Three 7” Markers (CK7, CD117, and Claudin-7) Is Useful in the Diagnosis of Chromophobe Renal Cell Carcinoma and for the Exclusion of Mimics: Diagnostic Experience from a Single Institution

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Jun Zhou ◽  
Xiaoqun Yang ◽  
Luting Zhou ◽  
Peipei Zhang ◽  
Chaofu Wang
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
High Specificity ◽  
Papillary Renal Cell Carcinoma ◽  
Chromophobe Renal Cell Carcinoma ◽  
Renal Oncocytoma ◽  
Single Institution ◽  
Cell Renal Cell Carcinoma

Background. There is a morphological overlap among renal epithelial tumors, particularly chromophobe renal cell carcinoma (CHRCC), clear cell renal cell carcinoma (CCRCC), renal oncocytoma (RO), and papillary renal cell carcinoma (PRCC). Discriminating between these tumors is important but sometimes challenging. This study is aimed at evaluating the clinical usefulness of the combined immunochemistry for the “three 7” markers (CK7, CD117, and Claudin-7) to distinguish chromophobe renal cell carcinoma from these mimics. Methods. Immunochemical staining for CK7, CD117, and Claudin-7 was performed in 68 CHRCCs, 199 CCRCCs, 32 ROs, and 30 PRCCs. Fluorescence in situ hybridization (FISH) was performed in some cases to exclude CCRCC and PRCC. The sensitivity (SE) and specificity (SP) for CHRCC as well as the immunoreactivity of each marker and their combinations were statistically evaluated. Results. High positive rates for CK7 (94%), CD117 (87%), Claudin-7 (94%), and their combinations (CK7+CD117, 79%; CK7+Claudin-7, 88%; CD117+Claudin-7, 82%; CK7+CD117+Claudin-7, 76%) were observed in CHRCC compared to those in CCRCC, RO, and PRCC, with increasingly higher SP when combinations of the “three 7” markers were applied (CK7, 0.80; CD117, 0.82; Claudin-7, 0.78; CK7+CD117, 0.95; CK7+Claudin-7, 0.97; CD117+Claudin-7, 0.97; CK7+CD117+Claudin-7, 1). Conclusion. CK7, CD117, and Claudin-7 are frequently expressed in CHRCC with high specificity. We recommend the routine use of these 3 markers as a routine panel when making a differential diagnosis of CHRCC and excluding other mimics.

Fine Needle Aspiration of Chromophobe Renal Cell Carcinoma

2007 ◽  
Vol 51 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Javier Salamanca ◽  
Nuria Alberti ◽  
Fernando López-Ríos ◽  
Andrés Perez-Barrios ◽  
Miguel Angel Martínez-González ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Fine Needle Aspiration ◽  
Renal Cell ◽  
Needle Aspiration ◽  
Chromophobe Renal Cell Carcinoma ◽  
Fine Needle

Expression of RON Proto-oncogene in Renal Oncocytoma and Chromophobe Renal Cell Carcinoma

2004 ◽  
Vol 28 (8) ◽  
pp. 1045-1050 ◽  
Author(s):  
Kurt T Patton ◽  
Maria S Tretiakova ◽  
Jorge L Yao ◽  
Veronica Papavero ◽  
Lei Huo ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Chromophobe Renal Cell Carcinoma ◽  
Renal Oncocytoma

A Pilot Study Evaluating Fine-Needle Aspiration Cytology of Clear-Cell Renal Cell Carcinoma: Comparison of Ancillary Immunocytochemistry and Cytomorphological Characteristics of SurePath™ Liquid-Based Preparations with Conventional Smears

2015 ◽  
Vol 59 (3) ◽  
pp. 239-247 ◽  
Author(s):  
Chung Hun Lee ◽  
Soo Young Chung ◽  
Kyung Chul Moon ◽  
In Ae Park ◽  
Yul Ri Chung ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Fine Needle Aspiration ◽  
Renal Cell ◽  
Fine Needle Aspiration Cytology ◽  
Clear Cell ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Needle Aspiration Cytology

Objective: Fine-needle aspiration cytology (FNAC) based on a liquid-based preparation is a safe and valuable diagnostic tool. However, due to unfamiliarity with this method and the considerably altered morphology that is associated with it, diagnosing renal cell carcinoma (RCC) from this type of preparation remains a challenge for cytopathologists. The aim of this study was to evaluate the cytomorphological characteristics of SurePath™ (SP)-based preparations compared with conventional smear (CS), and also the role of SP-based FNAC in the diagnosis of clear-cell RCC (CRCC), the most common primary renal malignancy. Study Design: Ex vivo FNAC of both tumors and normal renal parenchyma was prepared from 73 cases. Comparative cytomorphological analysis between liquid-based cytology (LBC) and CS as well as Fuhrman nuclear grading (FNG) was carried out. Immunocytochemistry was performed from normal and CRCC cytology specimens. Results: Normal renal cytology (NRC) showed no significant morphological differences between LBC and CS. For CRCC, LBC showed small, fragmented cell clusters, a 3-dimensional configuration, distinct cytoplasmic vacuoles, and irregular nuclear contours when compared with CS. FNG was overgraded with LBC compared to with CS. AMACR was the most valuable immunocytochemical marker for distinguishing CRCC from NRC. Conclusion: Once cytopathologists become familiar with the altered cytomorphological features of CRCC, FNAC, along with immunocytochemistry, may prove helpful for diagnosis.

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