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Evaluation test #03129/2017

QUESTION 1
Regarding the gross findings of the lesion (picture): what macroscopic feature do you consider which indicate that it is a malignant neoplasm?
Loss of teeth and ulceration.
Localized lesion with a broad base of implantation with periodontal inflammation.
Base broad implantation, with ulceration, loss of teeth - periodontal inflammation or / and osteomyelitis.
Pedunculated and ulcerated lesion.

QUESTION 2
Squamous cell carcinomas are a:
Malignant non infiltrative and metastatic tumor.
The biopsy and histopathological study is not important for accurate diagnosis.
Benign neoplasms.
The presence of ulceration is a sign of malignancy.

QUESTION 3
The growth pattern of squamous cell carcinomas:
It is very expansive, but the tumor is well delimited and encapsulated.
It is characteristic that they are not very expansive and no invasion of the lymphatic vessels is observed.
It is not expansive, they are well-defined benign neoplasms.
They have an infiltrative growth, and are not well defined with the possibility of infiltration along nerve sheaths, adventitia of blood vessels and lymphatics.

QUESTION 4
The presence of keratin pearls:
It is a characteristic finding of ameloblastic ameloblastomas.
They are characteristic of squamous cell carcinomas.
They are observed in the stromal tumors.
They are observed in ameloblastic carcinomas.

QUESTION 5
Histological features of neoplastic cell of squamous cell carcinoma is characterized by:
Fusiform cells immersed in an abundant matrix of mature collagen.
The number of mitoses is low.
Cellular location exclusively in the epidermis and do not break the basement membrane.
Malignant cells have a variable keratinization called keratin pearls.