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Cytologic rapid on-site evaluation of transthoracic computed tomography-guided lung needle biopsies: who should perform ROSE? A cross-institutional analysis of procedural and diagnostic outcomes

INTRODUCTION

Cytologic rapid on-site evaluation (ROSE) during minimally invasive biopsy procedures is an increasingly important service provided by cytopathology to increase diagnostic yield and appropriately triage cellular material. Although ROSE can be performed by cytopathologists, cytotechnologists, or cytopathology fellows, few studies have directly compared both procedural and diagnostic outcome measures among different ROSE personnel.

MATERIALS AND METHODS

We evaluated all transthoracic computed tomography (CT)-guided lung biopsies in which ROSE was performed during a 1-year period at 2 academic institutions with similar patient populations and procedural methods: Dartmouth-Hitchcock Medical Center (DHMC) (where ROSE is performed by cytopathologists) and the Beth Israel Deaconess Medical Center (BIDMC) (where ROSE is rendered by either cytotechnologists or cytopathology fellows).

RESULTS

A total of 273 CT-guided transthoracic lung biopsies (190 DHMC, 83 BIDMC) were analyzed. There was no major difference in procedure time with respect to ROSE personnel. The repeat procedure rate for nondiagnostic biopsies was similar at DHMC (cytopathologists) and BIDMC (cytotechnologists or cytology fellows) (2.1% versus 2.3%, P = 1.0). Adequacy rates for cytopathologists, cytotechnologists, and cytopathology fellows were comparable (P = 0.23). ROSE assessments by cytopathologists were more concordant with the final diagnosis (87%) than those by cytotechnologists (82%) or cytopathology fellows (79%); this difference was not statistically significant (P = 0.28).

CONCLUSIONS

ROSE procedural and diagnostic outcomes for transthoracic CT-guided lung biopsies were similar among cytopathologists, cytotechnologists, and cytopathology fellows.

Feasibility of dynamic telecytopathology for rapid on-site evaluation of endobronchial ultrasound-guided transbronchial fine needle aspiration

OBJECTIVE

Rapid on-site evaluation (ROSE) at the time of endobronchial ultrasound-guided transbronchial fine needle aspiration (EBUS-TBFNA) is useful in obtaining adequate samples and providing preliminary diagnosis. We present our experience with ROSE of EBUS-TBFNA using telecytopathology.

MATERIALS AND METHODS

Real-time images of Diff-Quik (Mercedes Medical, Sarasota, FL)-stained cytology smears were obtained with an Olympus (Olympus America, Center Valley, PA) digital camera attached to an Olympus CX41 microscope and transmitted via ethernet by a cytotechnologist to a cytopathologist in a cytopathology laboratory who rendered a preliminary diagnosis while communicating with an on-site cytotechnologist via the Vocera (San Jose, CA) voice communication system. The endoscopy suite was located a block away from the cytopathology laboratory. Accuracy of ROSE via telecytopathology was compared with an equal number of cases that received ROSE, prior to introduction of telecytopathology, via conventional microscopy.

RESULTS

ROSE was performed on a total of 200 EBUS-TBFNAs. The telecytopathology system and conventional microscopy were used to evaluate equal numbers of cases (100 each). Preliminary diagnoses of negative/benign, atypical/suspicious, and positive for malignancy were 58%, 14%, and 24% for telecytopathology and 57%, 10%, and 31% for conventional microscopy. Four percent of telecytopathology cases and 2% of conventional microscopy cases were deemed unsatisfactory at the time of ROSE. The overall concordance between the preliminary and final diagnoses was 96% for telecytopathology and 93% for conventional microscopy. The causes of discordant preliminary and final diagnoses could be mainly attributed to difficulty in distinguishing small cell carcinoma versus reactive lymph node due to crush artifact, atypia related to reactive bronchial epithelial cells, and availability of cell block material and Papanicolaou-stained slides for review at the time of final cytologic sign out.

CONCLUSIONS

Telecytopathology is comparable with conventional microscopy in ROSE of EBUS-TBFNA. It can serve as a valid substitute for conventional microscopy for on-site assessment of EBUS-TBFNA.

Five Top Stories in Cytopathology

Context.—Cytology relies heavily on morphology to make diagnoses, and morphologic criteria have not changed much in recent years. The field is being shaped predominantly by new techniques for imaging and for acquiring and processing samples, advances in molecular diagnosis and therapeutics, and regulatory issues.

Objective.—To review the importance of classical morphology in the future of cytopathology, to identify areas in which cytology is expanding or contracting in its scope, and to identify factors that are shaping the field.

Data Sources.—Literature review.

Conclusions.—Five stories paint a picture in which classical cytomorphology will continue to have essential importance, both for diagnosis and for improving our understanding of cancer biology. New endoscopy and imaging techniques are replacing surgical biopsies with cytology samples. New molecularly targeted therapies offer a chance for cytology to play a major role, but they pose new challenges. New molecular tests have the potential to synergize with, but not replace, morphologic interpretation of thyroid fine-needle aspirations. Ultrasound-guided fine-needle aspiration performed by cytopathologists is opening a new field of “interventional cytopathology” with unique value. For the productive evolution of the field, it will be important for cytopathologists to play an active role in clinical trials that document the ability of cytology to achieve cost-effective health care outcomes.

Feasibility of telecytopathology for rapid preliminary diagnosis of ultrasound-guided fine needle aspiration of axillary lymph nodes in a remote breast care center

Background:

In the recent years, the advances in digital methods in pathology have resulted in the use of telecytology in the immediate assessment of fine needle aspiration (FNA) specimens. However, there is a need for organ-based and body site-specific studies on the use of telecytology for the immediate assessment of FNA to evaluate its pitfalls and limitations. We present our experience with the use of telecytology for on-site evaluation of ultrasound-guided FNA (USG-FNA) of axillary lymph nodes in a remote breast care center.

Materials and Methods:

Real-time images of Diff-Quik-stained cytology smears were obtained with an Olympus digital camera attached to an Olympus CX41 microscope and transmitted via ethernet by a cytotechnologist to a pathologist who rendered preliminary diagnosis while communicating with the on-site cytotechnologist over the Vocera system. The accuracy of the preliminary diagnosis was compared with the final diagnosis, retrospectively.

Results:

A total of 39 female patients (mean age: 50.5 years) seen at the breast care center underwent USG-FNA of 44 axillary nodes. Preliminary diagnoses of benign, suspicious/malignant, and unsatisfactory were 41, 52, and 7%, respectively. Only one of the 23 cases that were initially interpreted as benign was reclassified as suspicious on final cytologic diagnosis. Seventeen of 18 suspicious/malignant cases on initial cytology corresponded with a malignant diagnosis on final cytology. One suspicious case was reclassified as benign on final cytologic diagnosis. All unsatisfactory cases remained inadequate for final cytologic interpretation. The presence of additional material in the cell block and interpretative error were the main reasons for discrepancy, accounting for the two discrepant cases.

Conclusions:

This retrospective study demonstrates that the on-site telecytology evaluation of USG-FNA of axillary lymph nodes in patients at a remote breast care center was highly accurate compared with the final cytologic evaluation. It allows pathologists to use their time more efficiently and makes on-site evaluation at a remote site possible.