Dr. Borja Gracia Tello, MD, PhD

Chair, Scientific Advisory Board

Dr. Borja Gracia Tello, MD, PhD

Professor of Medicine, University of Zaragoza

Dr. Borja del Carmelo Gracia Tello is an internist and academic director of the Unidad de Enfermedades Autoinmunes Sistémicas (Systemic Autoimmune Diseases Unit) at Hospital Clínico Universitario Lozano Blesa (Zaragoza), and Professor of Medicine at the University of Zaragoza. After completing his specialist training in Internal Medicine, he undertook a research fellowship with Prof. David Isenberg at University College London, where he gained advanced expertise in systemic autoimmune diseases and lupus. His clinical and research work focuses on microvascular involvement and connective tissue diseases, with a particular interest in systemic sclerosis, biomarkers of disease activity, and imaging-based tools to improve early diagnosis and risk stratification.

Dr. Gracia Tello has coordinated and participated in multiple national and international research projects, including studies on systemic sclerosis–associated pulmonary arterial hypertension, sarcoidosis, giant cell arteritis, and COVID-19. He is the lead inventor of a project on the digitalisation and automated analysis of nailfold capillaroscopy, developed through the GEAS (Grupo Español de Enfermedades Autoinmunes Sistémicas) of SEMI (Spanish Society of Internal Medicine), and co-author of the CAPI-Score and CAPI-Detect algorithms for quantitative videocapillaroscopy. As Chair of the Scientific Advisory Board, he provides strategic and scientific oversight for Capillaroscopy.com, ensuring that all educational content is rigorous, up-to-date, and aligned with international standards of care.

ORCID: research record and publications

Contributed cases and studies (2)

Guides with credited review

Images in the atlas (202)

Showing 121–132 of 202 images

Rounded hairpin capillaries with some curved or overlapping limbs. The deeper vascular network is visible.Rounded loops over broad interconnecting vessels

Rounded hairpin capillaries with some curved or overlapping limbs. The deeper vascular network is visible.

Borja Gracia Tello

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.33 × 1.31 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 12–26 µm. These are automated estimates, not manually validated measurements.

Capillaries with paired or accessory apices, especially on the right, mixed with simple hairpin loops.Accessory tips along a curved vascular border

Capillaries with paired or accessory apices, especially on the right, mixed with simple hairpin loops.

Borja Gracia Tello

Recorded diagnosis: Raynaud phenomenon

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.25 × 1.27 mm

For nonbranching apices with stable automated measurements, estimated widths span approximately 11–28 µm. These are automated estimates, not manually validated measurements.

Giant-appearing capillaries with thick, folded loops on both sides, with fine hairpin capillaries in the center.Giant-appearing folded loops beside fine hairpins

Giant-appearing capillaries with thick, folded loops on both sides, with fine hairpin capillaries in the center.

Borja Gracia Tello

No recorded physical calibration is available. Giant-capillary morphology is a visual assessment; the ≥50 µm diameter criterion is not confirmed.

An enlarged central capillary with uneven limb thickness, beside narrow hairpin loops.A thickened central limb among slender loops

An enlarged central capillary with uneven limb thickness, beside narrow hairpin loops.

Borja Gracia Tello

Magnification:
212.92×
Device:
Dino-Lite Edge
Field of view (W × H):
≈ 1.84 × 1.47 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 16–48 µm. These are automated estimates, not manually validated measurements.

An enlarged rounded capillary apex left of center, among narrower and folded loops.A broad dark apex among folded neighboring loops

An enlarged rounded capillary apex left of center, among narrower and folded loops.

Borja Gracia Tello

Recorded diagnoses: Antiphospholipid syndrome; Systemic lupus erythematosus

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.27 × 1.28 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 30–49 µm. These are automated estimates, not manually validated measurements.

Several giant-appearing capillaries with thick limbs and broad or folded apices, mixed with narrower loops.Multiple giant-appearing loops with broad folded apices

Several giant-appearing capillaries with thick limbs and broad or folded apices, mixed with narrower loops.

Borja Gracia Tello

Magnification:
250×
Device:
Smart G-Scope

No recorded physical calibration is available. Giant-capillary morphology is a visual assessment; the ≥50 µm diameter criterion is not confirmed.

Giant-appearing capillaries in the center and right, with narrow hairpin loops and a crossed capillary on the left.Giant-appearing loops amid crossed and slender forms

Giant-appearing capillaries in the center and right, with narrow hairpin loops and a crossed capillary on the left.

Borja Gracia Tello

Magnification:
200×
Device:
Optilia
Field of view (W × H):
≈ 1.71 × 1.28 mm

The field of view uses the supplied Optilia calibration. Giant-capillary morphology is a visual assessment; the ≥50 µm diameter criterion has not been confirmed by individual measurement.

An enlarged rounded apex on the left, with crossed and mildly tortuous capillaries nearby.A bulbous apex in an otherwise finer row

An enlarged rounded apex on the left, with crossed and mildly tortuous capillaries nearby.

Borja Gracia Tello

Recorded diagnosis: Limited systemic sclerosis

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.32 × 1.31 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 14–52 µm. These are automated estimates, not manually validated measurements.

Several giant-appearing capillaries with broad rounded apices, especially on the right. A folded loop is visible in the center.Repeated giant-appearing tips across a mixed row

Several giant-appearing capillaries with broad rounded apices, especially on the right. A folded loop is visible in the center.

Borja Gracia Tello

Magnification:
200×
Device:
Optilia Digital Capillaroscope
Field of view (W × H):
≈ 1.71 × 1.28 mm

The field of view uses the supplied Optilia calibration. Giant-capillary morphology is a visual assessment; the ≥50 µm diameter criterion has not been confirmed by individual measurement.

An enlarged rounded apex with a narrower limb right of center, surrounded by crossed and mildly tortuous capillaries.A bulbous tip among crossed and winding loops

An enlarged rounded apex with a narrower limb right of center, surrounded by crossed and mildly tortuous capillaries.

Borja Gracia Tello

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.35 × 1.32 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 20–37 µm. These are automated estimates, not manually validated measurements.

A central giant-appearing capillary with a thick rounded apex and broad limbs, surrounded by finer loops.A central loop with giant-capillary morphology

A central giant-appearing capillary with a thick rounded apex and broad limbs, surrounded by finer loops.

Borja Gracia Tello

Magnification:
200×
Device:
Optilia
Field of view (W × H):
≈ 1.71 × 1.28 mm

The field of view uses the supplied Optilia calibration. Giant-capillary morphology is a visual assessment; the ≥50 µm diameter criterion has not been confirmed by individual measurement.

An enlarged hairpin capillary left of center, with narrower loops and a separate irregular apex nearby.One broad loop within a row of narrower hairpins

An enlarged hairpin capillary left of center, with narrower loops and a separate irregular apex nearby.

Borja Gracia Tello

Magnification:
250×
Device:
Smart G-Scope
Field of view (W × H):
≈ 2.29 × 1.29 mm

For the subset of apices with stable automated measurements, estimated widths span approximately 19–43 µm. These are automated estimates, not manually validated measurements.