Data gathered since 1953 concerning more than 30,000 coalminers while employed at 24 collieries in England, Scotland, and Wales have been used to study the incidence of progressive massive fibrosis (PMF) in working coalminers. Results refer to 52,264 approximately five year intervals when the miners were at risk of an attack of PMF. One objective of the present study was to describe how the fiv...

BACKGROUND Platysma myocutaneous flap (PMF) is a generally used technique for defect reconstruction after an oral cancer resection. The aim of the study is to present our experience using vertical PMF that sacrificed the facial artery and vein for intraoral reconstruction. METHODS A retrospective review of the medical records of 54 patients who underwent vertical PMF that sacrificed the facia...

We experimentally investigated a simple and new technique for the fabrication of micro-ridge long-period gratings (MRLPGs) based on polarization-maintaining fibers (PMFs). The cladding region of the PMFs was etched periodically using a wet etching technique resulting in the periodic formation of micro-ridges on the surface of the PMF. The PMF-based MRLPGs has two resonant peaks because of the b...

Accepted 29 July 1996 Abstract Objective-To determine whether previous health experiences affect the prevalence of occupational lung disease in a semirural Botswanan community where there is a long history of labour recruitment to South African mines. Method-A cross sectional prevalence study of 304 former miners examined according to a protocol including a questionnaire, chest radiograph, spir...

The basal proton motive force (PMF) levels and the influence of the bacteriocin nisin on the PMF were determined in Listeria monocytogenes Scott A. In the absence of nisin, the interconversion of the pH gradient (Z delta pH) and the membrane potential (delta psi) led to the maintenance of a fairly constant PMF at -160 mV over the external pH range 5.5 to 7.0. The addition of nisin at concentrat...

RATIONALE This case report describes the progression of primary myelofibrosis (PMF) to polycythemia vera (PV), and discuss its potential mechanisms. PATIENT CONCERNS The patient was admitted because of abdominal discomfort and enlarged spleen for 19 months. DIAGNOSIS A case of PMF progressed to PV was retrospectively analyzed. There were 19 months between the diagnosis of PMF and PV. The JA...

We report a case of recurrent laryngeal nerve palsy caused by coalworkers' pneumoconiosis with progressive massive fibrosis (PMF). This illustrates that PMF alone may be added to the list of lesions which can cause recurrent laryngeal nerve palsy. However, efforts should always be made to exclude more common causes, in particular bronchogenic carcinoma, before attributing the palsy to PMF.

Accepted 29 July 1996 Abstract Objective-To determine whether previous health experiences affect the prevalence of occupational lung disease in a semirural Botswanan community where there is a long history of labour recruitment to South African mines. Method-A cross sectional prevalence study of 304 former miners examined according to a protocol including a questionnaire, chest radiograph, spir...

BACKGROUND Vascular events represent the most frequent complications of thrombocytemias. We aimed to evaluate their risk in the WHO histologic categories of Essential Thrombocytemia (ET) and early Primary Myelofibrosis (PMF). METHODS From our clinical database of 283 thrombocytemic patients, we selected those with available bone marrow histology performed before any treatment, at or within 1 ...

Primary myelofibrosis (PMF) is a myeloproliferative neoplasm (MPN) with a high propensity to develop acute myeloid leukemia, named at this stage blast phase (BP) of PMF.1 Oncogenic JAK2 signaling is an important event in MPN, but transformation process into BP, although not completely understood, often involves additional genomic lesions.2 Several models have been developed to predict survival ...