PathoCaps.
The project of an MD pathologist, explaining Pathology to students, clinicians, lab professionals and patients alike.
“Learning together about our body, health and disease as a whole.”
Pathology, covered from every angle.
From surgical specimens to autopsy findings, PathoCaps walks through the subspecialties that make up the diagnostic backbone of modern medicine.
Diagnosis
Every post starts from a real diagnostic question — the kind a pathologist actually has to answer at the microscope, translated so anyone can follow the reasoning.
Evidence
Claims are grounded in current literature and established diagnostic criteria, not opinion. When something is uncertain, PathoCaps says so.
Objectivity
No sensationalism, no fear-based framing. Disease is explained as biology — precise, calm, and respectful of the patients behind every slide.
A trusted voice in Pathology.
Real numbers from a real, weekly-run account — not a media kit exaggeration.
Gross specimen · from the archive
Run by an MD pathologist who stays behind the microscope.
PathoCaps is written and curated by a licensed Pathology specialist who keeps a private, low profile by design, in line with medical data-protection principles: the focus stays on the science and the cases, never on the person behind the microscope.
Since 2022, PathoCaps has grown into one of the most followed Pathology accounts in its field across Spain, the rest of Europe and the Americas — built one weekly post at a time, for an audience of physicians, residents, medical students, lab technicians and curious patients.
Where PathoCaps actually lives.
The full archive of cases, explainers and weekly stories is on Instagram. A live, embeddable profile widget isn't offered by Instagram to third-party sites anymore — so here's an honest snapshot, and a direct link to the real thing.
Interesting cases and medical information for everyone. Academic purposes only. Stories and cases, weekly.
Uveal melanoma · gross specimen
Enucleation specimen bisected to show a dome-shaped, heavily pigmented mass arising from the uveal tract — the most common primary intraocular malignancy in adults, originating from melanocytes of the choroid, ciliary body or iris.
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Same case, staging clues
Tumor thickness, basal diameter, ciliary body involvement and any extrascleral extension are the gross findings that drive prognosis and staging, alongside cell type and mitotic count on histology.
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GMS silver stain · intestinal epithelium
Grocott-Gomori methenamine silver (GMS) deposits black metallic silver on silver-reducing structures against a light-green counterstain — the classic histochemical stain for screening mucosa for fungal organisms.
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PAS stain · intestinal epithelium
Periodic acid–Schiff (PAS) stains glycogen and mucosubstances magenta-pink, lighting up goblet-cell mucin and the epithelial brush border — one of the most used histochemical stains for demonstrating mucin content.
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Same GMS stain, wider field
Scanning at lower power keeps the villous architecture in view while checking the whole section for silver-positive organisms, not just an isolated hot spot.
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LSIL · cervical cytology
Low-grade squamous intraepithelial lesion: squamous cells with enlarged, hyperchromatic nuclei and perinuclear halos (koilocytosis) — the cytologic signature of HPV infection, corresponding to CIN 1 on histology.
View on InstagramThese link out to the @pathocaps profile — new cases go up there first, so following is the only way to catch them as they happen.
“Let's learn Pathology together.”
Pathology decides more of modern medicine than most people realize — every biopsy, every surgical margin, every autopsy finding passes through it before a diagnosis becomes real. PathoCaps exists to open that black box: for the student staring at a slide for the first time, the lab technician who deserves to understand the why behind the protocol, the physician outside the specialty who wants a clearer picture, and the patient trying to make sense of a report written in a language that wasn't meant for them. No jargon left unexplained, no shortcuts on rigor — just an honest, weekly habit of looking closer.
— PathoCaps, est. 2022
Collaborations, press & questions.
PathoCaps keeps a low profile, but every message reaches a real person. Reach out for brand collaborations, academic partnerships or press.