Tumores hepáticos primarios malignos no hepatocarcinoma ni colangiocarcinoma / Primary malignant hepatic tumors other than hepatocarcinoma or cholangiocarcinoma: a series of cases

Background: There are several types of primary malignant hepatic tumors (PMHT) other than hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC): they are infrequent and poorly known. Imaging studies could help characterize the lesions and may guide the diagnosis. However, the definitive diagnosis of PMHT is made by pathology. Aim: To review a registry of liver biopsies performed to diagnose hepatic tumors. Patients and Methods: Review of a pathology registry of liver biopsies performed for the diagnosis of liver tumors. Among these, 25 patients aged 57 ± 17 years, 60% males, in whom a liver tumor other than a HCC or CC was diagnosed, were selected for review. The medical records of these patients were reviewed to register their clinical characteristics, imaging and the pathological diagnosis performed during surgery and/ or with the percutaneous liver biopsy. Results: Ten patients (40%) had neuroendocrine tumors, six (24%) had a lymphoma and four (16%) had hepatic hemangioendothelioma. Angiosarcoma and sarcomatoid carcinoma were diagnosed in one patient each. In 22 patients (88%), neither clinical features nor imaging studies gave the correct diagnosis. Four patients (16%) had chronic liver disease. The most frequent symptoms were weight loss in 28% and abdominal pain in 24%. Conclusions: The most common PMHT other than HCC and CC were neuroendocrine tumors and lymphomas. Imaging or clinical features were not helpful to reach the correct diagnosis.

Tumores óseos. Estadística en relación a sexo, edad y sitio. Informe de 1351 casos / Bone tumors. Statistic in relationship to sex, age and location. Report of 1351 cases

Se presenta una serie de 1351 casos de tumores óseos primarios benignos y malignos, metastásicos, tumores malignos de tejidos blancos que invadieron hueso y lesiones seudotumorales atendidos en ocho años, de 1982 a 1989 en el Hospital de Ortopedia Magdalena de las Salinas del IMSS. La relación del sexo masculino y femenino fue de 1.3:1; la población pediátrica correspondió a 422 pacientes, de los cuales 91.5% cursaron con lesiones malignas y 8.5% con tumores malignos; 929 enfermos fueron adultos, y de ellos, 75.6% tuvieron lesiones benignas y 24.4% tumores malignos. Los segmentos anatómicos afectados con mayor frecuencia fueron: la extremidad pélvida con 754 casos y la extremidad torácica con 301. Se presenta el registro detallado en las variables analizadas. Los datos encontrados en nuestro estudio son similares a los informacos en las "series clásicas".