Morphometric characterization of the human portal and hepatic venous trees: A quantitative support to the liver micro-anatomic models free of subunits.

Conventional models of liver microanatomy assume the presence of subunits. Nevertheless, some researchers propose that the liver is a continuous structure, free of these subunits, but with a characteristic vascular pattern. The present study describes a morphometric analysis of portal and hepatic veins in 50 human autopsy non-pathological liver samples.

[Microcystic adnexal carcinoma: Mohs micrographic surgery as the treatment of choice].

Introduction And Objectives: Microcystic adnexal carcinoma is a rare and aggressive tumor that manifests clinically as a subcutaneous nodule located on the head or neck. The tumor can be confused clinically and histologically with other benign and malignant skin lesions, often leading to inappropriate initial treatment. The chief concern with microcystic adnexal carcinoma is the elevated morbidity and the high rate of recurrence after wide local excision.

Histological characterisation of small renal masses and incidence of silent renal masses.

With the introduction of sonographic and CT examinations, the number of small renal masses detected has increased. Benign neoplastic lesions are usually smaller than 4 cm in size, whilst the most common types of renal cell carcinomas have a mean size greater than that, but we must not forget that a significant number of small masses are renal cell carcinomas; even though the rate of benign cases increases as the diameter of the lesions decreases, therefore, size itself cannot be used to rule out a diagnostic of malignancy and often image characteristics are not enough to predict the nature of the lesion with certainty. In this case, histological confirmation must be recommended.

[Contribution of PET in the follow-up of cerebral metastases in non-small cell lung cancer. A clinical case valuation].

We report a clinical case of a male 44 years old with lung adenocarcinoma with a single brain metastases treated with surgery and radiotherapy. The different PET studies performed during the evolution of the disease were very useful and crucial, firstly in the detection of radiation necrosis and after that when cerebral metastases recurrent appeared twice. The radiographic technique (Brain MRI) and the histopathology after the surgical removal confirmed the PET results.

Radial scar versus tubular carcinoma of the breast. A comparative study with quantitative techniques (morphometry, image- and flow cytometry).

The present study is focused on the differential diagnosis between radial scar (RS) and tubular carcinoma (TC) using morphometrical and cytophotometrical analysis (static and flow cytometry) of a number of histologically well-established RS cases (17 lesions) compared with 6 early infiltrating small TC with sclerotic stroma and pseudo-RS fields. One case displayed both RS and TC foci in contiguity. Mean nuclear area was larger in the group of tubular carcinomas (51.