11 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... centrilobular nodules ... perilymphatic distribution ... #Pattern #Comparison ... #Table #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... Sarcoidosis: nodules ... perilymphatic distribution ... #Pattern #Comparison ... #Table #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... perilymphatic distribution ... perilymphatic distribution ... #Differential #Comparison ... #Table #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
The distribution ... pattern. ... In most cases small ... #Pattern #Distribution ... Perilymphatic #Comparison
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
Pustular Skin Rash ... Differential Diagnosis Algorithm ... Comedones +/- nodules ... periorbital & nasolabial distribution ... #causes
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
- Bimodal Age Distribution ... prognosis • Nodular ... • Classic - Nodular ... involvement, irregular pattern ... Lymphoproliferative #Disorders #Classification
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
composed of papules + nodules ... painful, indurated nodules ... reddish-purple nodules ... PrathitKulkarni #Erythemas #comparison ... #table #differential
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... : erythematous nodules ... mucositis - Rash ... - (C-ANCA) pattern ... #rheumatology #classification
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
Dermatological Conditions - Distribution ... Christmas tree pattern ... Firm red to brown nodule ... #dermatology #rash ... #skin #common #distribution
PALM RASHES 
Common features and patterns:
1.	Color:
o	Red or erythematous: Common in inflammatory or allergic reactions.
o	Purple or purpuric:
Common features and patterns ... Raised (papular or nodular ... dermatitis. 4 Distribution ... Seen in systemic causes ... o Peripheral patterns