4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
4. Hrvatski kongres kliniËke citologije 4th Croatian Congress ... - Penta
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Clinical Cytology - Oral Presentations<br />
ADDITIONAL CYTOMORPHOLOGICAL CRITERIA IN DIAGNOSIS OF PILOMATRICOMA -<br />
BENIGN TUMOR WITH BAD REPUTATION<br />
Seili-Bekafigo I1 , Jonjić N2 , Štemberger C1 , Rajković-Molek K1 1 KBC Rijeka, Department of Cytology, Department.of Internal Medicine, Rijeka, Croatia<br />
2 Rijeka University School of Medicine, Department of Pathology, Rijeka, Croatia<br />
Aim. Pilomatricomas (PM) are benign skin appendageal tumors,with differentiation towards<br />
hair-forming cells,usually found in children. They are frequently misdiagnosed by<br />
clinicians, and there are many reports of false positive diagnoses made on fine needle<br />
aspirates (FNA). PM are often mistaken for «small round cell tumors in children, or for<br />
Merkel cell carcinoma, basalioma and metastatic small cell carcinoma in adults, with<br />
possible over-aggressive therapeutic approach. The aim of this study was to confirm<br />
existing and possibly add some new morphologic and morphometric characteristics of<br />
PM. Patients and methods. In 6 cases of PM, correctly diagnosed preoperatively by FNA,<br />
clinical, cytomorphologic and basic morphometric features (the longest nuclear diameter),<br />
were analyzed, and compared with 4 cases of malignant tumors with similar clinical<br />
presentation. Smears were stained according to May-Gruenwald-Giemsa (MGG) method.<br />
Results. Morphometric data did not prove to be helpful. In addition to well known<br />
cytomorphologic characteristics of PM, in all 6 cases we found basophilic cytoplasmatic<br />
protrusions, that could be useful additional cytomorphologic feature of PM. Conclusion.<br />
We concluded that cytomorphologic characteristics of PM are reliable enough for correct<br />
preoperative diagnosis in adequate specimens. The best results are achieved when<br />
FNA is performed by an experienced cytologist, considering all relevant clinical data.<br />
irena.seili-bekafigo@ri.t-com.hr<br />
105<br />
4 th <strong>Croatian</strong> <strong>Congress</strong> of Clinical Cytology / 1 st <strong>Croatian</strong> Symposium of Analytical Cytology / 2 nd <strong>Croatian</strong> Symposium of Cytotechnology