[Bronchioloalveolar adenoma associated with bronchiolitis obliterans and leishmaniasis with lung involvement in acquired immunodeficiency syndrome]. / Adenoma bronquioloalveolar asociado a bronquiolitis obliterante y leishmaniasis pulmonar en el sida.

Visceral leishmaniasis is not unusual in patients with acquired immunodeficiency syndrome (AIDS), but lung infiltration is uncommon. Leishmaniasis involving the lung often manifests as interstitial pneumonitis. We report a case in which the discovery of amastigotes in the transbronchial biopsy led to a diagnosis of leishmaniasis. However, the findings from x-rays and study of the bronchoalveolar lavage fluid were consistent with bronchiolitis obliterans, possibly caused by the AIDS virus. In addition, the transbronchial biopsy findings were consistent with a diagnosis of bronchioloalveolar adenoma with radiographic evidence of multiple nodules.

Respiratory infections of sheep.

Sheep respiratory infections appear as differing clinical syndromes. Mild, acute infections are usually due to parainfluenza 3 (PI3) virus. A mild but chronic respiratory problem in lambs under 1 year old is thought to be caused by Mycoplasma ovipneumoniae probably in association with Pasteurella and PI3. Acute bacterial pneumonia usually results from infection with Pasteurella of biotype A. Infection with PI3 can initiate invasion by Pasteurella. Bordetella parapertussis infection has also been implicated. Serotypes of biotype T P. haemolytica cause an acute septicaemia. Stressful management practices may be a predisposing factor. Chronic proliferative pneumonia results from infection by retroviruses of pulmonary adenomatosis or maedi-visna. Both infections have incubation periods extending into years. The former produces fatal tumorous masses in the lungs. Diagnostic tests are being actively sought. Maedi-visna can present as several clinical problems, frequently as an insidious but fatal proliferative pneumonia.

Pregnancy complicated by acute pulmonary lymphangitic adenomatosis, metastasis and disseminated intravascular coagulation. A case report.

BACKGROUND: The association of pregnancy and cancer is a rare event, occurring in less than 1 case per 5,000 pregnancies, and is a cause of maternal mortality in about 5% of cases. CASE: A 33-year-old, Japanese woman presented at the end of pregnancy with clinical manifestations of pneumonia and developed fatal disseminated intravascular coagulation in the postpartum period. The pathologic findings suggested the existence of a primary cancer in the gastrointestinal tract with pulmonary and placental metastases. CONCLUSION: The biologic course of malignancies in pregnancy is complex. In gastrointestinal cancer, normal pregnancy symptoms can mask and delay the diagnosis. As in this patient, very rare presentations are possible.

Atypical adenomatous hyperplasia of the lung: a clinicopathological study of 118 cases including cases with multiple atypical adenomatous hyperplasia.

BACKGROUND: Atypical adenomatous hyperplasia (AAH) of the lung is a putative precursor lesion of adenocarcinoma, according to many immunohistochemical and genetical studies, but few clinicopathological studies on a large number of cases have been reported. The aim of this study was to clarify the clinicopathological characteristics of lung cancer patients with AAH lesions. METHODS: A retrospective study was carried out on 508 consecutive primary lung cancer patients operated on at National Cancer Center Hospital East. The relationship between the number and location of AAH lesions and the clinicopathological features of the lung cancer patients was analysed statistically. RESULTS: A total of 311 AAH lesions were found in 118 (23.2%) of the 508 cases. AAH lesions were detected in 121 of 572 lobes examined, usually in both upper lobes, and occurred most frequently in patients with adenocarcinoma (OR 2.97; 95% CI 1.82 to 4.85). AAH lesions were more frequently detected in patients with multiple primary carcinomas than in those with a single carcinoma (OR 3.06; 95% CI 1.56 to 6.00). The presence of AAH lesions was not significantly correlated with sex, age, smoking status, familial history of malignancy, or preceding malignancy. Patients with multiple AAH lesions were found to have a significantly higher frequency of preceding malignancies. CONCLUSIONS: The present study highlights the clinicopathological characteristics of AAH lesions, showing them to be significantly associated with both adenocarcinoma and multiple primary carcinoma of the lung and suggesting common factors in the histogenesis of multiple AAH lesions and preceding malignancy.

Spontaneous postnatal resolution of a cystic lung mass: A case report.

Postnatal cystic adenomatoid malformations (CAMs) are managed by surgical excision. Asymptomatic CAMs have decreased in size with initial observation. This is the first reported case of complete resolution of a postnatal CAM. Premature infants with asymptomatic CAMs may benefit from careful observation as their initial treatment.

The association between atypical adenomatous hyperplasia and primary lung cancer.

Atypical adenomatous hyperplasia (AAH) has been suggested as the adenoma in an adenoma-carcinoma sequence in the lung periphery. From 1989-1998, we undertook a systematic, prospective search for AAH in lungs resected for cancer. AAH was found in 67 of 554 patients (12. 1%) with primary lung carcinoma (9.2% in male patients and 19.0% in females). AAH was found in lungs bearing adenocarcinoma (23.2%) more frequently than with large cell undifferentiated carcinoma (12.5%) or squamous carcinoma (3.3%). A greater percentage of females with adenocarcinoma had AAH (30.2%) than did males with adenocarcinoma (18.8%). Numbers of AAH ranged from 1-42 per patient and more patients had small numbers of AAH, although 12 patients had 6 or more AAH foci. Larger numbers of AAH tended to be found in adenocarcinoma-bearing lungs. Ten of the 67 patients with AAH and primary lung carcinoma (15%) had multiple primary cancers (range 2-6), all of which were adenocarcinoma. Synchronous cancers were rare in lung tumour-bearing resections without AAH. Patients with AAH show no difference in post-operative survival to those without, for all stages of carcinoma and for Stage I disease alone. This study provides evidence for a strong association between atypical adenomatous hyperplasia and primary lung adenocarcinoma and lends weight to the AAH/adenoma-carcinoma hypothesis.

Malformación adenomatosa quística del pulmón: diagnóstico prenatal / Cystic adenomatoid malformation of the lung: antenatal diagnosis

Presentamos un caso clínico de diagnóstico antenatal de malformación adenomatosa quística del pulmón. Se realiza una revisión de la literatura y se discute el manejo perinatal