The occurrence of acute generalized exanthematous pustulosis adverse reactions to medication administration is becoming more frequent. This article reports the case of a 78-year-old woman who attended the clinic with generalized papules and pustules on the scalp, trunk and limbs, with a concordant histology study and who was diagnosed with acute generalized exanthematous pustulosis (AGEP) associated with the use of phenytoin, a medication that may cause different skin reactions and that has been previously related to this disease. The patient was treated with systemic steroids and the disease had a satisfactory outcome.

Meconium peritonitis is a rarely described condition that is typically found in fetal and perinatal patients. It manifests in different ways and requires an early diagnosis. In this case report, a clinical suspicion of the disease was made at the antenatal period through an obstetric ultrasound scan showing an abdominal mass in both the bottom and top right quadrants. The patient initial symptoms were those of acute intestinal obstruction. Nevertheless, these symptoms improved after surgical approach was timely performed. Based on this outcome, it can be concluded that a favorable outcome to this pathology depends on its early diagnosis, since an early diagnosis decreases morbidity and mortality chances

Acute idiopathic pulmonary hemorrhage is a rare life-threatening disease in children. The classic triad includes hemoptysis, anemia and respiratory distress. Since clinical presentation may vary, diagnosis can be difficult. Severe respiratory distress, and ventilatory failure requiring mechanical ventilation are often present. Chest X-rays usually show unilateral or bilateral infiltrates, therefore, other causes of pulmonary hemorrhage must be excluded, since most of them correspond to systemic diseases. Treatment often requires intravenous steroids to solve the respiratory failure in most cases. We present two cases involving infants treated at Hospital San José (a fourth level hospital in Bogotá, Colombia) with acute idiopathic pulmonary hemorrhage which required mechanical ventilation and responded to intravenous steroids. A literature review was conducted with special emphasis on clinical presentation, diagnosis and therapeutic approaches.

Nevus lipomatosus superficialis is a benign tumor characterized by the presence of mature adipocytes located in the superficial layer of the dermis; its management is surgical and most of the time is reported in adults. This case presents a malformation from birth in the sacrococcygeal region over the lateral line to the right, which is why, after obtaining imaging studies to rule out an associated hidden dysraphism, surgery was decided for total resection of the mass, without complications. Finally, the pathology report diagnoses nevus lipomatosus superficialis, which constitutes a rare and unusual case based on the differential diagnoses and presentation.

Primary hepatic leiomyosarcoma is extremely rare among cases of liver tumors in adults, with an incidence of 0.1 and 1%. This paper describes the case of a 55 year-old man with a clinical evolution of five months consisting of abdominal pain, a large hard lump, weight loss, shortness of breath and fever. A three-phase computed tomography (CT) showed a hypercaptive mass at its periphery during hypodense arterial phase at its center, located in segments VI and VI, without a plane of separation of the liver. Due to the symptoms, the patient underwent an exploratory laparotomy, finding a cerebroid mass of 40 x 40 cm; a lumpectomy without hepatectomy was performed, leaving free surgical margins. The diagnosis was largely made through a histopathological assessment, finding stromal multinucleated pleomorphic forms, desmin (+), SMA (smooth muscle actin) and MSA (muscle specific actin) (+), Ki67 (+) and negative for S100 (protein S100) and CD117 antibody, which confirmed the high grade pleomorphic leiomyosarcoma diagnosis. The patient was discharged 16 days after admission once his condition improved, and was referred to the oncology department for adjuvant chemotherapy. Given the size of the mass, the prognosis was bleak, which left surgery as the only option to offer survival expectations through regulated or "atypical" hepatectomies along with safety margins and liver transplantation. With this in mind, the first option was chosen; six months after surgery, with clinical improvement and adjuvant therapy, the patient, still with unfavorable prognosis, remained stable attending multidisciplinary medical management controls

Evisceration is a condition in which abdominal viscera protrude through an unnatural hole, with an incidence between 0.03 and 4.1%. This condition often occurs after an abdominal hysterectomy (47%), vaginal hysterectomy (29.4%) or laparoscopic approach (23.6%). It has the highest incidence in hysterectomized postmenopausal women, while the time interval between surgery and complication onset may vary from a few days to a few years. Moreover, in most cases, the eviscerated organ is the small intestine, which represents a surgical emergency. Transvaginal evisceration is a rare entity and is scarcely documented; the case of a 81-year-old patient with a history of abdominal hysterectomy, who attended the medical service after eight hours of evolution of a clinical picture characterized by pelvic pain and ejection of the large intestine (sigmoid colon) through the vaginal canal is presented here. The patient underwent an exploratory laparotomy, Hartmann colostomy, rectopexy to the promontory and restitution of traffic in a subsequent procedure; after presenting a satisfactory evolution, she was discharged.

This search for truth mechanisms in Medicine is especially applicable when its object of study is the biological machine that makes up humans. This conception of Medicine —which could be called positivist— is limited and impractical if applied in isolation, although there are strong attempts to clearly define its object of study from reductionism because of the complexity of humans as a biological phenomenon and as a social, ethical and political entity.