[Primary pulmonary manifestation of extramedullary acute myelocytic leukemia]

We report on a 49 year old female with primary extra-medullary manifestation of a acute myeloid leukemia in the lungs without leukemic signs. The disease was diagnosed by detection of leukemic blast cells in bronchoalveolar lavage. Chemotherapy with the TAD-VP-scheme resulted in partial remission. The patient died in systemic early relapse. To our knowledge this is the first description of primary isolated extra-medullary manifestation of a acute myeloid leukemia in the lungs.

Influence of oxygen concentration on argon plasma coagulation-induced tissue damage in isolated pig tracheas

BACKGROUND

Argon plasma coagulation (APC) is used during bronchoscopy to restore passage of central airways. Concern has been raised about the possibility that elevated oxygen concentration may increase the tissue damage by APC.

OBJECTIVE

to examine the extent of tissue damage at different concentrations of oxygen in isolated pig tracheas.

METHODS

The APC-induced tissue damage was investigated macroscopically and microscopically in isolated and artificially ventilated pig tracheas at oxygen concentrations of 21, 50, 75 and 100%.

RESULTS

There was deep coagulation of all tissue layers reaching the adventitia independent of the oxygen concentration up to 75% O(2). With 100% O(2), only tissue damage increased and combustion occurred.

CONCLUSIONS

APC-induced tissue damage in ex vivo pig tracheas was independent of the oxygen concentration relevant for clinical practice.

[Multifocal malignant transformation of extreme fibromatosis with pulmonary involvement]

We report on the case of a 40-year old patient with extreme neurofibromatosis with severe kyphoskoliosis and deformation of the thorax. The patient died from malignant transformation which occurred multifocally with extensive pulmonary metastases. The well-known thoracic manifestations of neurofibromatosis are reviewed.

[Obturating endobronchial lipoma--bronchoscopic therapy]

We report on the case of a 77-year old man in whom a lipoma caused occlusion of the lingular bronchus with consecutive dystelectasis. The lipoma was resected via the bronchoscope with a hot snare. The incidence, clinical characteristics and treatment of endobronchial lipomas are described.

[The retothel sarcoma of the stomach]

At the instance of a female patient with a retothelial sarcoma (immunoblastoma) of the stomach who after 2 1/2 years post operationem (local tumour excision) does not give a reference to an unfavourable course the author deals with the rarity of this gastric tumour. A deánite attitude is adopted to clinic and problem of the preoperative diagnostics of this rare gastric tumor as well as to the prognosis. By radiological and fiber-gastroscopic investigation of the stomach cannot always preoperatively made the diagnosis corresponding to the histologic structure of the tumour. Therefore, in this case the surgical intervention is aspired to. Postoperatively in patients with rare or malignant tumours of the stomach control examinations are regularly to be recommended. Altogether the prognosis of retothelial sarcomas of the stomach are not more unfavourable than those of the gastric carcinomas.