## 3 Results  
### Benign Tumors  
As mentioned before, 81 cases had benign pathology, totaling 109 tumors; this leads to the conclusion that multiple tumors were associated with one case. The maximum number of performed excisions per case was seven. Multiple types of benign tumors were encountered. The permanent challenge was to state an accurate initial clinical diagnosis; the success rate of this was confirmed by the results of the histological examinations. However, there have been cases in which the clinical diagnosis was confirmed by the laboratory. We described the various types of benign tumors and the correspondence between the clinical and the histological diagnosis. From a total of 36 clinically diagnosed skin nevi, the anatomopathological exam revealed 13 different histological diagnoses: one hemangioma, two papilloma's and 10 cases of keratatosis. From eight lipomas, three were not confirmed by the laboratory. Sixteen sebaceous cysts were clinically diagnosed, from which six had a different result. Fromsix hemangiomas, two were later described as a BCC of the orbital region. Four cases of teratomas were confirmed. From nine presumed warts, four were discovered to be skin nevi. Eleven tumors were initially described as keratoacanthomas, of which two were confirmed as skin nevi. In one case, the suspicion of domangioma was confirmed by the histological diagnosis of hemangiioma. Glomus tumors represent 1-5% of soft tissue tumors of the hand and 75% are in a subungual location. Glomus tumors usually present as bluish or pinkish red. The clinical triad of tenderness, severe pain and cold sensitivity, along with the cold sensitivity test were reported to be reliable for diagnosis [4]. Ten squamous cell papillomas were suspected; two were confirmed as basal cell carcinomas and three as skin nevi. From 12 presumed basal cell papillomas (seborrheic keratosis), seven were described as skin nevi. All of the four suspected actinic keratosis were described by the histological exam as BCC. One suspicion of hidradenoma was described by the laboratory as hemangioma. To summarize, 57 initial clinical diagnoses matched the histological findings and 52 had different anatomopathological diagnoses. Looking at things from a different perspective, from the 109 histologically confirmed benign facial skin tumors, 99 were initially suspected of being benign and 10 had a clinical diagnosis of malign tumors which was confirmed by the histological results (nine suspected BCC and one SCC that was later described as pilomatrixoma). However, we also describe the initial clinical diagnoses of benign tumors that after extensive histological examination were found to be of malignant nature or the other way around; we will further describe some of these circumstances. A case of a suspected upper eyelid sebaceous cyst was histologically described as a rare sebaceous carcinoma. Sebaceous carcinoma is a rare malignant tumor often localized in the periorbital area, and is also called adenocarcinoma of the sebaceous gland, Meibomian gland carcinoma, or Zeiss gland carcinoma. The tumor is locally aggressive and can metastasize to regional lymph nodes and distant organs [5]. In the case of the suspected frontal sebaceous cyst, the immunohistochemistry test described a cutaneous pseudo lymphoma predominant with B lymphocytes associated with neoangiogenesis as shown in Figure 1,b. From nine initially diagnosed BCC, two were described as ulcerated hemangiomas, two as squamous cell papillomas, four as actinic keratosis and one as a basal cell papilloma. Figure 1: _Cont_. As mentioned before, one presumed SCC had a final histological diagnosis of pilotmatrixoma. Pilomatrixoma, a benign tumor, known to occur in children, is rare in the middle-aged. Clinically and in aspiration cytology it is as a diagnostic pitfall. Correct preoperative diagnosis is 11-50% accurate and this often leads to unwarranted extensive surgery.