swelling over lover lid since 1year on and off type progressive increase , history of intralesional injection with swelling subside then again come back after then recurrent history of lesion excision thinking it as chalazion now patient come to opd with swelling of size 1*1.8 cm over lower lid single 1 cm fraom medial and lateral canthus, overlying skin non erythematus or tender and not fixed to underlying swelling , swelling non mobile and attach to deeper structure , skin smooth underlying conjunctiiva irregular with hyperemic, no regional lymph nodes palpable. make me a case to write in exam
sebaceous carcinoma eyelid
eyelid sebaceous carcinoma recurrent chalazion clinical presentation diagnosis authoritative
shoeten it by 50%
add: lid margin involver with iregular
The swelling involves the lower lid margin, which appears irregular and distorted.
A solitary swelling of about 1 × 1.8 cm is present over the lower lid, approximately 1 cm from both medial and lateral canthi, with involvement and irregularity of the lower lid margin.
Make the complete case presentation exam-ready
sebaceous carcinoma eyelid
sebaceous carcinoma eyelid recurrent chalazion diagnosis ophthalmology
how to ruleout dds
eyelid sebaceous carcinoma diagnosis biopsy
AAO sebaceous carcinoma eyelid differential diagnosis biopsy map biopsies
“A recurrent eyelid mass cannot be reliably differentiated from malignancy by clinical examination alone. Full-thickness incisional biopsy with histopathology is required for confirmation. Previous excision histopathology should also be reviewed.”
| Differential diagnosis | Features against it in this case | How to rule it out |
|---|---|---|
| Recurrent chalazion | Recurrence after injection and excision, progressive enlargement, firm fixation to deeper tissue, irregular lid margin, irregular hyperemic conjunctiva | Full-thickness biopsy. Histology of chalazion shows lipogranulomatous inflammation with lipid-laden macrophages and giant cells, without malignant cells. |
| Sebaceous gland carcinoma | This is the leading provisional diagnosis, not a diagnosis to rule out | Full-thickness biopsy from lid lesion and involved conjunctiva. Look for sebaceous differentiation, atypical cells with vacuolated cytoplasm and high mitotic activity. Consider conjunctival map biopsies to detect pagetoid spread. |
| Basal cell carcinoma | Usually presents as a pearly or translucent nodule with telangiectasia, rolled edges and possible ulceration. These are absent here. However, its lower-lid location makes it an important differential. | Histopathology shows basaloid nests with peripheral palisading and stromal retraction. |
| Squamous cell carcinoma | Usually has a keratinized, ulcerative, scaly, or indurated lesion, often with sun-damaged surrounding skin. These features are absent. | Biopsy demonstrates atypical squamous cells, keratin pearls, and invasive squamous nests. |
| Merkel cell carcinoma | Usually rapidly enlarging, painless, red-blue/violet, dome-shaped skin nodule. This lesion is chronic and has a conjunctival component. | Biopsy with immunohistochemistry, typically CK20-positive in a perinuclear dot pattern. |
| Eyelid adnexal tumour | Clinical appearance is not specific. Recurrent, deep, lid-margin lesion requires tissue diagnosis. | Histopathology and immunohistochemistry establish the specific adnexal tumour type. |
| Lymphoma | Usually manifests as a diffuse, salmon-pink conjunctival lesion rather than a firm lid-margin mass. | Biopsy with immunohistochemistry and, where needed, flow cytometry. |
“In this case, recurrent chalazion is less likely because the lesion has recurred despite intralesional injection and previous excision, has progressive growth, is fixed to deeper structures, involves and distorts the lid margin, and is associated with irregular hyperemic palpebral conjunctiva. The definitive investigation is a full-thickness incisional biopsy with histopathological examination, supplemented by conjunctival map biopsies if sebaceous gland carcinoma is suspected.”
history of 3 months red eye in re with no pain of any symptoms except glare and photophobia, and left eye normal, make a long case for presentation
history of 3 months red eye in re with no pain of any symptoms except glare and photophobia, and left eye normal, make a long case for presentation
anterior uveitis diagnosis
AAO anterior uveitis chronic unilateral photophobia posterior synechiae evaluation
A case of chronic unilateral anterior uveitis in the right eye with posterior synechiae, presenting with painless red eye, glare, and photophobia for 3 months.