V. Cervilla - Academia.edu (original) (raw)
Papers by V. Cervilla
The journal of bone and joint surgery, 1992
Plain radiographs of 67 acute spinal compression fractures in 49 patients were analysed by subjec... more Plain radiographs of 67 acute spinal compression fractures in 49 patients were analysed by subjective and objective criteria, using CF scans as the diagnostic standard Orthopaedics and Rehabilitation V. Cervilla, MD, Bone Radiology
Skeletal Radiology, 1990
* Supported in part by VA Grant =~ SA306 Address reprint requests to: Donald Resnick, M.D., Depar... more * Supported in part by VA Grant =~ SA306 Address reprint requests to: Donald Resnick, M.D., Department of Radiology, VA Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161, USA tory o f t r auma , and the pa t i en t is o therwise heal thy. M o d e r a t e l imi tat ion o f left h ip f lexion was present . Conven t i ona l r o e n t g e n o g r a m s d e m o n s t r a t e d a calcif ied o r ossif ied mass pos t e r io r to the head o f the left femur (Fig. 1). A c o m p u t e d t o m o g raph ic (CT) scan (Fig. 2) d e m o n s t ra ted a 5 . 5 x 3 . 0 c m i r regular , a m o r p h o u s , dense mass ar is ing f rom the do r sa l aspect o f the pos t e r io r colu m n o f the left a c e t a b u l u m ; the mass was b r o a d b a s e d and wi thou t a defini te assoc ia ted soft t issue mass. A 99m-Tc me thy lene d i p h o s p h o n a t e bone scan d e m o n s t r a t e d increased up t ake in the left pos t e r io r ace tabular region. CT o f the chest was no r mal . A n incis ional b iopsy and subsequent excis ion o f the lesion were performed.
Radiology, 1991
To determine the histopathologic correlates of alterations in the rotator cuff at magnetic resona... more To determine the histopathologic correlates of alterations in the rotator cuff at magnetic resonance (MR) imaging, 13 cadaveric shoulders (in subjects aged 26-83 years at the time of death) underwent MR imaging in the coronal oblique plane at 1.5 T with proton-density-and T2-weighted spin-echo sequences. Areas corresponding to sites of MR imaging alterations were then examined histologically. Increased signal intensity on proton-density-weighted images (without further increased signal intensity on T2-weighted images) and an indistinct margin at the articular side of the supraspinatus tendon corresponded to eosinophiic, fibnillar, and mucoid degeneration and scarring. Areas of increased signal intensity on T2-weighted images were associated with severe degeneration and disruption of the supraspinatus tendon. Although other authors have suggested that certain MR findings are indicative of tendinitis, the histologic data in this study were not those of active inflammation but rather tendon degeneration.
Radiology, 1991
Abnormalities of the long tendon of the biceps brachii muscle commonly accompany other lesions ab... more Abnormalities of the long tendon of the biceps brachii muscle commonly accompany other lesions about the shoulder, especially rotator cuff rupture, and are a frequent cause of a painful shoulder. The spectrum of abnormalities associated with medial displacement of the biceps tendon seen at magnetic resonance (MR) imaging was reviewed in six patients. MR imaging was performed on a 1.5-T system with use of a dedicated surface coil. The findings at MR imaging were correlated with those at surgery. Two types of medial displacement of the biceps tendon were identified. More frequently observed was a defect in the subscapularis apparatus that allowed intraarticular entrapment of the biceps tendon. Less commonly observed was incomplete dislocation, with the biceps tendon lying between a partially disrupted subscapularis tendon. MR imaging enabled accurate identification of medial dislocation of the biceps tendon and entrapment of the tendon within the glenohumeral joint. MR imaging also demonstrated the associated disruption of the subscapularis tendon that must be present to allow the biceps tendon access to the joint space.
Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes, 1989
We report a patient with a stress fracture in the sacrum. This may be a cause of hip or back pain... more We report a patient with a stress fracture in the sacrum. This may be a cause of hip or back pain. In contrast to typically bilateral insufficiency fractures, fatigue fractures are usually unilateral and the appearances are not diagnostic on scintigraphy. As the plain film findings may be subtle and overlooked, computed tomography is more specific in delineating a sclerotic vertical fracture parallel to the sacroiliac joint. Recognition of the characteristic radiographic pattern in sacral fatigue fractures can avoid incorrect diagnosis and unnecessary tests or treatment.
Revista médica de Chile, 1996
Seronegative arthritides are a heterogeneous group of diseases that includes rheumatoid arthritis... more Seronegative arthritides are a heterogeneous group of diseases that includes rheumatoid arthritis with negative rheumatoid factor. Between 1980 and 1984 we studied 38 patients with seronegative arthritis. Thirty of these patients were reassessed in 1994 after 9 to 20 years of evolution. Seventeen patients had a diagnosis of seronegative rheumatoid arthritis; this diagnosis was maintained in 12, changed to seropositive rheumatoid arthritis in three, to psoriatic arthritis in one and connective tissue disease in one. Thirteen patients had a diagnosis of undifferentiated arthritis; in 1994 the diagnosis was maintained in three, seven patients were diagnosed as having a spondyloarthropathy, two as having a reactive arthritis and one as having a connective tissue disease. In 1994, nine patients fulfilled the 1991 criteria for spondyloarthritis and six of these did so on admission. Six of 12 patients with seronegative rheumatoid arthritis had an active disease or used antiinflammatory dru...
Revista médica de Chile, 1994
The aim of this study was to assess lumbar spine bone density in a group of chilean postmenopausa... more The aim of this study was to assess lumbar spine bone density in a group of chilean postmenopausal females and to estimate the frequency of vertebral osteopenia in the national urban female population. A clinical assessment and lumbar spine bone density measurement were performed to 171 healthy women over 40 years of age and not receiving medications that modify bone turnover. Calcium ingestion was recalled in 77 of these. Fifty women (29.2%) had osteopenia, defined as a bone density of less than 0.92 g/cm2. Extrapolating this figure to the national urban population, an osteopenia frequency of 21.7% was estimated. Body mass index was 25.5 +/- 3.8 and 57% of the sample was overweight. Calcium ingestion was 740.3 +/- 331.7. These two parameters did not correlative with bone density. Women with osteopenia were older and had a longer postmenopausal lapse than those with normal bone density. The completion of further clinical an epidemiological studies is recommended to know the real mag...
Radiology, 1991
... U Recognition of Limited Radiography Training Programs From: Claire E. Bender, MD Chairman, J... more ... U Recognition of Limited Radiography Training Programs From: Claire E. Bender, MD Chairman, Joint Review Committee on Education in ... U Acute Cervical Trauma: Correlation of MR Imaging Findings with Neurologic Deficit From: Mark E. Schweitzer, MD, Vinincio Cervilla, MD ...
Seminars in Arthritis and Rheumatism, 1995
Revista chilena de infectología, 2000
Investigative Radiology, 1992
Cartilage degeneration in osteoarthrosis (OA) of the knee generally is believed to precede osseou... more Cartilage degeneration in osteoarthrosis (OA) of the knee generally is believed to precede osseous abnormalities. Because cartilage abnormalities are not readily detected by routine radiography, we investigated the role of magnetic resonance imaging (MRI) in assessing cartilage damage in a goat model for OA. Four goats had the anterior cruciate ligament of one knee severed surgically to create instability and accelerate OA. Two goats each were killed at 4 and 6 weeks, respectively, after walking on the unstable knees. MRI of the knees was performed with Hybrid fat suppression sequences. The images were correlated with gross anatomic sections and histologic analysis of the knees. On gross examination, the unstable knees showed rapid development of thinning, surface irregularity, and focal defects of the cartilage. These findings correlated well with abnormalities detected on the MRIs. In addition, areas of decreased signal intensity in cartilage correlated with histologic evidence of degenerative changes in the cartilage substance, including fragmentation, fibrillary and eosinophilic changes, and chondrocyte proliferation, indicating attempted cartilage repair. Precise correlation of pathologic and MRI data, however, was lacking, related in part to inability to match perfectly the level and orientation of the gross section with that on the MRI examination.
Clinical Imaging, 1992
A new sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior c... more A new sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior cruciate ligament (PCLJ is described. Thirty-one patients with magnetic resonance [MR) examinations of the knee suspicious for ACL injury and 50 normal controls were examined. In each patient a line was drawn adjacent and parallel to the posterior margin of the distal portion of the PCL and was extended proximally. A positive PCL line did not intersect the medullary cavity of the femur. A positive line correctly predicted ACL injury in 19 of 22 patients.
Radiology, 1992
Standard proton-density- and T2-weighted magnetic resonance (MR) imaging and MR arthrography were... more Standard proton-density- and T2-weighted magnetic resonance (MR) imaging and MR arthrography were used to depict rotator cuff disease in 36 shoulders in 36 patients; the findings were compared with arthroscopic findings in every patient. In 19 rotator cuffs normal at arthroscopy, MR arthrography revealed no tear in 16 patients, a partial tear in one patient, and a full-thickness tear in two patients. Standard proton-density- and T2-weighted images were normal in 15 of these patients and revealed a partial tear in two patients and a full-thickness tear in two patients. In 13 partial tears found at arthroscopy, MR arthrography showed a partial tear in six patients, no tear in five patients, and a full-thickness tear in two patients; standard MR imaging revealed a partial tear in one patient, no tear in 10 patients, and a full-thickness tear in two patients. All four full-thickness tears proved with arthroscopy were correctly diagnosed with both MR imaging methods. The main advantage o...
Rheumatology, 2002
Objective. To assess the contribution of the HLA-DRB1 shared epitope (SE) to the radiological out... more Objective. To assess the contribution of the HLA-DRB1 shared epitope (SE) to the radiological outcome of rheumatoid arthritis (RA) after 6 yr of follow-up in a reported series of 129 Chilean patients with established disease.
Skeletal Radiology, 1990
Insufficiency fractures of the sacrum are a commonly recognized form of stress fracture typically... more Insufficiency fractures of the sacrum are a commonly recognized form of stress fracture typically occurring in elderly patients. As such patients usually present with low back pain, MR imaging is often performed initially as a means of evaluation. We present 5 patients with sacral insufficiency fractures imaged with MR. Metastatic disease was a leading clinical suspicion as all patients were elderly and three had known primary neoplasms. T1-weighted sequences demonstrated bands of decreased signal intensity, usually paralleling the sacral aspect of the sacroiliac joints and occasionally occurring as a horizontal band across the sacral body. Four of five patients underwent further evaluation with computed tomography (CT) or nuclear bone scanning, which confirmed the diagnosis of sacral insufficiency fracture. We conclude that MRI is sensitive but not specific in detecting sacral insufficiency fractures. As MR imaging is rapidly becoming the method of choice for evaluating back pain, it is important to consider this diagnosis in elderly persons.
Journal of Orthopaedic Trauma, 1991
The journal of bone and joint surgery, 1992
Plain radiographs of 67 acute spinal compression fractures in 49 patients were analysed by subjec... more Plain radiographs of 67 acute spinal compression fractures in 49 patients were analysed by subjective and objective criteria, using CF scans as the diagnostic standard Orthopaedics and Rehabilitation V. Cervilla, MD, Bone Radiology
Skeletal Radiology, 1990
* Supported in part by VA Grant =~ SA306 Address reprint requests to: Donald Resnick, M.D., Depar... more * Supported in part by VA Grant =~ SA306 Address reprint requests to: Donald Resnick, M.D., Department of Radiology, VA Medical Center, 3350 La Jolla Village Drive, San Diego, CA 92161, USA tory o f t r auma , and the pa t i en t is o therwise heal thy. M o d e r a t e l imi tat ion o f left h ip f lexion was present . Conven t i ona l r o e n t g e n o g r a m s d e m o n s t r a t e d a calcif ied o r ossif ied mass pos t e r io r to the head o f the left femur (Fig. 1). A c o m p u t e d t o m o g raph ic (CT) scan (Fig. 2) d e m o n s t ra ted a 5 . 5 x 3 . 0 c m i r regular , a m o r p h o u s , dense mass ar is ing f rom the do r sa l aspect o f the pos t e r io r colu m n o f the left a c e t a b u l u m ; the mass was b r o a d b a s e d and wi thou t a defini te assoc ia ted soft t issue mass. A 99m-Tc me thy lene d i p h o s p h o n a t e bone scan d e m o n s t r a t e d increased up t ake in the left pos t e r io r ace tabular region. CT o f the chest was no r mal . A n incis ional b iopsy and subsequent excis ion o f the lesion were performed.
Radiology, 1991
To determine the histopathologic correlates of alterations in the rotator cuff at magnetic resona... more To determine the histopathologic correlates of alterations in the rotator cuff at magnetic resonance (MR) imaging, 13 cadaveric shoulders (in subjects aged 26-83 years at the time of death) underwent MR imaging in the coronal oblique plane at 1.5 T with proton-density-and T2-weighted spin-echo sequences. Areas corresponding to sites of MR imaging alterations were then examined histologically. Increased signal intensity on proton-density-weighted images (without further increased signal intensity on T2-weighted images) and an indistinct margin at the articular side of the supraspinatus tendon corresponded to eosinophiic, fibnillar, and mucoid degeneration and scarring. Areas of increased signal intensity on T2-weighted images were associated with severe degeneration and disruption of the supraspinatus tendon. Although other authors have suggested that certain MR findings are indicative of tendinitis, the histologic data in this study were not those of active inflammation but rather tendon degeneration.
Radiology, 1991
Abnormalities of the long tendon of the biceps brachii muscle commonly accompany other lesions ab... more Abnormalities of the long tendon of the biceps brachii muscle commonly accompany other lesions about the shoulder, especially rotator cuff rupture, and are a frequent cause of a painful shoulder. The spectrum of abnormalities associated with medial displacement of the biceps tendon seen at magnetic resonance (MR) imaging was reviewed in six patients. MR imaging was performed on a 1.5-T system with use of a dedicated surface coil. The findings at MR imaging were correlated with those at surgery. Two types of medial displacement of the biceps tendon were identified. More frequently observed was a defect in the subscapularis apparatus that allowed intraarticular entrapment of the biceps tendon. Less commonly observed was incomplete dislocation, with the biceps tendon lying between a partially disrupted subscapularis tendon. MR imaging enabled accurate identification of medial dislocation of the biceps tendon and entrapment of the tendon within the glenohumeral joint. MR imaging also demonstrated the associated disruption of the subscapularis tendon that must be present to allow the biceps tendon access to the joint space.
Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes, 1989
We report a patient with a stress fracture in the sacrum. This may be a cause of hip or back pain... more We report a patient with a stress fracture in the sacrum. This may be a cause of hip or back pain. In contrast to typically bilateral insufficiency fractures, fatigue fractures are usually unilateral and the appearances are not diagnostic on scintigraphy. As the plain film findings may be subtle and overlooked, computed tomography is more specific in delineating a sclerotic vertical fracture parallel to the sacroiliac joint. Recognition of the characteristic radiographic pattern in sacral fatigue fractures can avoid incorrect diagnosis and unnecessary tests or treatment.
Revista médica de Chile, 1996
Seronegative arthritides are a heterogeneous group of diseases that includes rheumatoid arthritis... more Seronegative arthritides are a heterogeneous group of diseases that includes rheumatoid arthritis with negative rheumatoid factor. Between 1980 and 1984 we studied 38 patients with seronegative arthritis. Thirty of these patients were reassessed in 1994 after 9 to 20 years of evolution. Seventeen patients had a diagnosis of seronegative rheumatoid arthritis; this diagnosis was maintained in 12, changed to seropositive rheumatoid arthritis in three, to psoriatic arthritis in one and connective tissue disease in one. Thirteen patients had a diagnosis of undifferentiated arthritis; in 1994 the diagnosis was maintained in three, seven patients were diagnosed as having a spondyloarthropathy, two as having a reactive arthritis and one as having a connective tissue disease. In 1994, nine patients fulfilled the 1991 criteria for spondyloarthritis and six of these did so on admission. Six of 12 patients with seronegative rheumatoid arthritis had an active disease or used antiinflammatory dru...
Revista médica de Chile, 1994
The aim of this study was to assess lumbar spine bone density in a group of chilean postmenopausa... more The aim of this study was to assess lumbar spine bone density in a group of chilean postmenopausal females and to estimate the frequency of vertebral osteopenia in the national urban female population. A clinical assessment and lumbar spine bone density measurement were performed to 171 healthy women over 40 years of age and not receiving medications that modify bone turnover. Calcium ingestion was recalled in 77 of these. Fifty women (29.2%) had osteopenia, defined as a bone density of less than 0.92 g/cm2. Extrapolating this figure to the national urban population, an osteopenia frequency of 21.7% was estimated. Body mass index was 25.5 +/- 3.8 and 57% of the sample was overweight. Calcium ingestion was 740.3 +/- 331.7. These two parameters did not correlative with bone density. Women with osteopenia were older and had a longer postmenopausal lapse than those with normal bone density. The completion of further clinical an epidemiological studies is recommended to know the real mag...
Radiology, 1991
... U Recognition of Limited Radiography Training Programs From: Claire E. Bender, MD Chairman, J... more ... U Recognition of Limited Radiography Training Programs From: Claire E. Bender, MD Chairman, Joint Review Committee on Education in ... U Acute Cervical Trauma: Correlation of MR Imaging Findings with Neurologic Deficit From: Mark E. Schweitzer, MD, Vinincio Cervilla, MD ...
Seminars in Arthritis and Rheumatism, 1995
Revista chilena de infectología, 2000
Investigative Radiology, 1992
Cartilage degeneration in osteoarthrosis (OA) of the knee generally is believed to precede osseou... more Cartilage degeneration in osteoarthrosis (OA) of the knee generally is believed to precede osseous abnormalities. Because cartilage abnormalities are not readily detected by routine radiography, we investigated the role of magnetic resonance imaging (MRI) in assessing cartilage damage in a goat model for OA. Four goats had the anterior cruciate ligament of one knee severed surgically to create instability and accelerate OA. Two goats each were killed at 4 and 6 weeks, respectively, after walking on the unstable knees. MRI of the knees was performed with Hybrid fat suppression sequences. The images were correlated with gross anatomic sections and histologic analysis of the knees. On gross examination, the unstable knees showed rapid development of thinning, surface irregularity, and focal defects of the cartilage. These findings correlated well with abnormalities detected on the MRIs. In addition, areas of decreased signal intensity in cartilage correlated with histologic evidence of degenerative changes in the cartilage substance, including fragmentation, fibrillary and eosinophilic changes, and chondrocyte proliferation, indicating attempted cartilage repair. Precise correlation of pathologic and MRI data, however, was lacking, related in part to inability to match perfectly the level and orientation of the gross section with that on the MRI examination.
Clinical Imaging, 1992
A new sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior c... more A new sign of anterior cruciate ligament (ACL) tear based on secondary changes of the posterior cruciate ligament (PCLJ is described. Thirty-one patients with magnetic resonance [MR) examinations of the knee suspicious for ACL injury and 50 normal controls were examined. In each patient a line was drawn adjacent and parallel to the posterior margin of the distal portion of the PCL and was extended proximally. A positive PCL line did not intersect the medullary cavity of the femur. A positive line correctly predicted ACL injury in 19 of 22 patients.
Radiology, 1992
Standard proton-density- and T2-weighted magnetic resonance (MR) imaging and MR arthrography were... more Standard proton-density- and T2-weighted magnetic resonance (MR) imaging and MR arthrography were used to depict rotator cuff disease in 36 shoulders in 36 patients; the findings were compared with arthroscopic findings in every patient. In 19 rotator cuffs normal at arthroscopy, MR arthrography revealed no tear in 16 patients, a partial tear in one patient, and a full-thickness tear in two patients. Standard proton-density- and T2-weighted images were normal in 15 of these patients and revealed a partial tear in two patients and a full-thickness tear in two patients. In 13 partial tears found at arthroscopy, MR arthrography showed a partial tear in six patients, no tear in five patients, and a full-thickness tear in two patients; standard MR imaging revealed a partial tear in one patient, no tear in 10 patients, and a full-thickness tear in two patients. All four full-thickness tears proved with arthroscopy were correctly diagnosed with both MR imaging methods. The main advantage o...
Rheumatology, 2002
Objective. To assess the contribution of the HLA-DRB1 shared epitope (SE) to the radiological out... more Objective. To assess the contribution of the HLA-DRB1 shared epitope (SE) to the radiological outcome of rheumatoid arthritis (RA) after 6 yr of follow-up in a reported series of 129 Chilean patients with established disease.
Skeletal Radiology, 1990
Insufficiency fractures of the sacrum are a commonly recognized form of stress fracture typically... more Insufficiency fractures of the sacrum are a commonly recognized form of stress fracture typically occurring in elderly patients. As such patients usually present with low back pain, MR imaging is often performed initially as a means of evaluation. We present 5 patients with sacral insufficiency fractures imaged with MR. Metastatic disease was a leading clinical suspicion as all patients were elderly and three had known primary neoplasms. T1-weighted sequences demonstrated bands of decreased signal intensity, usually paralleling the sacral aspect of the sacroiliac joints and occasionally occurring as a horizontal band across the sacral body. Four of five patients underwent further evaluation with computed tomography (CT) or nuclear bone scanning, which confirmed the diagnosis of sacral insufficiency fracture. We conclude that MRI is sensitive but not specific in detecting sacral insufficiency fractures. As MR imaging is rapidly becoming the method of choice for evaluating back pain, it is important to consider this diagnosis in elderly persons.
Journal of Orthopaedic Trauma, 1991